UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

OR

COMMISSION FILE NUMBER: 0-23599

MERCURY COMPUTER SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

978-256-1300

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 229.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer¨    Accelerated filerx    Non-accelerated filer¨    Smaller reporting company¨

Indicate by check mark whether the registrant is a shell company (as defined by Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

Shares of Common Stock outstanding as of OctoberJanuary 31, 2012: 32,241,9432013: 32,288,527 shares

MERCURY COMPUTER SYSTEMS, INC.

INDEX

PART I. FINANCIAL INFORMATION

MERCURY COMPUTER SYSTEMS, INC.

CONSOLIDATED BALANCE SHEETS

(In thousands, except share and per share data)

(Unaudited)

The accompanying notes are an integral part of the consolidated financial statements.

MERCURY COMPUTER SYSTEMS, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE (LOSS) INCOME

(In thousands, except per share data)

(Unaudited)

The accompanying notes are an integral part of the consolidated financial statements.

MERCURY COMPUTER SYSTEMS, INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

The accompanying notes are an integral part of the consolidated financial statements.

MERCURY COMPUTER SYSTEMS, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(Amounts in thousands except per share data)

(Unaudited)

A. Description of Business

Mercury Systems, Inc. (formerly Mercury Computer Systems, Inc.) (the “Company” or “Mercury”) is a best of breed provider of commercially developed, open sensor and Big Data processing systems, software and services for critical commercial, defense and intelligence applications. The Company’s solutions play a critical role in a wide range of applications, processing and transforming sensorstreaming real-time data to information for storage, analysis and interpretation. The Company’s goal is to grow and build on its position as a critical component of the defense and intelligence industrial base and be the leading provider of open and affordable sensor processing subsystems for intelligence, surveillance and reconnaissance (“ISR”), electronic warfare (“EW”), and missile defenseBig Data applications. In military reconnaissance and surveillance platforms, the Company’s sub-systems receive, process, and store real-time radar, video, sonar and signals intelligence data. The Company provides radio frequency (“RF”) and microwave products for enhanced signal acquisitions and communications in military and commercial applications. Additionally, Mercury Federal Systems, the Company’s wholly owned subsidiary, focuses on direct and indirect contracts supporting the defense, intelligence, and homeland security agencies. The Company has growing capabilities in the area of “Big Data”Big Data processing, analytics and analysis in support of both the U.S. Department of Defense (“DoD”) and to the intelligence community as they enhance their ability to acquire, process and exploit large amounts of data for both real-time analytics and “forensic” analysis.

The Company’s products and solutions address mission-critical requirements within the defense industry for C4ISR (command, control, communications, computers, intelligence, surveillance and reconnaissance) and electronic warfare systems and services, and target several markets including maritime defense, airborne reconnaissance, ballistic missile defense, ground mobile and force protection systems and tactical communications and network systems. The Company’s products orand solutions have been deployed in more than 300 different programs with over 25 different prime defense contractors. The Company delivers commercially developed technology and solutions that are based on open system architectures and widely adopted industry standards, and supports all of this with services and support capabilities.

B. Summary of Significant Accounting Policies

BASISOF PRESENTATION

The accompanying consolidated financial statements have been prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to the Form 10-Q and Article 10 of Regulation S-X. Certain information and footnote disclosures, normally included in annual consolidated financial statements have been condensed or omitted pursuant to those rules and regulations; however, in the opinion of management the financial information reflects all adjustments, consisting of adjustments of a normal recurring nature, necessary for fair presentation. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes for the fiscal year ended June 30, 2012 which are contained in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on August 22, 2012. The results for the three and six months ended September 30,December 31, 2012 are not necessarily indicative of the results to be expected for the full fiscal year.

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.

BUSINESS COMBINATIONS

The Company utilizes the acquisition method of accounting under Financial Accounting Standard Boards (“FASB”) Accounting Standard Codification (“ASC”) 805,Business Combinations, (“FASB ASC 805”), for all transactions and events which it obtains control over one or more other businesses, to recognize the fair value of all assets and liabilities acquired, even if less than one hundred percent ownership is acquired, and in establishing the acquisition date fair value as measurement date for all assets and liabilities assumed. The Company also utilizes FASB ASC 805 for the initial recognition and measurement, subsequent measurement and accounting, and disclosure of assets and liabilities arising from contingencies in business combinations.

USEOF ESTIMATES

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.

REVENUE RECOGNITION

The Company relies upon FASB ASC 605,Revenue Recognition to account for its revenue transactions. Revenue from system sales isare recognized upon shipment provided that title and risk of loss have passed to the customer, there is persuasive evidence of an arrangement, the sales price is fixed or determinable, collection of the related receivable is reasonably assured, and customer acceptance criteria, if any, have been successfully demonstrated.

Certain contracts with customers require the Company to perform tests of its products prior to shipment to ensure their performance complies with the Company’s published product specifications and, on occasion, with additional customer-requested specifications. In these cases, the Company conducts such tests and, if they are completed successfully, includes a written confirmation with each order shipped. As a result, at the time of each product shipment, the Company believes that no further customer testing requirements exist and that there is no uncertainty of acceptance by its customer.

The Company enters into multiple-deliverable arrangements that may include a combination of hardware components, related integration or other services. These arrangements generally do not include any performance-, cancellation-, termination- or refund-type provisions. Total revenue recognized under multiple-deliverable revenue arrangements was 30%33% and 45%31% of total revenues in the three and six months ended September 30,December 31, 2012, respectively. Total revenue recognized under multiple-deliverable revenue arrangements was 55% and 51% of total revenues in the three and six months ended December 31, 2011, respectively.

The Company uses FASB Accounting Standards Update (“ASU”) No. 2009-13 (“FASB ASU 2009-13”),Multiple-Deliverable Revenue Arrangements. FASB ASU 2009-13 establishes a selling price hierarchy for determining the selling price of a deliverable, which includes: (1) vendor-specific objective evidence (“VSOE”) if available; (2) third-party evidence (“TPE”) if VSOE is not available; and (3) best estimated selling price (“BESP”), if neither VSOE nor TPE is available.

Per the provisions of FASB ASU 2009-13, the Company allocates arrangement consideration to each deliverable in an arrangement based on its relative selling price. The Company generally expects that it will not be able to establish VSOE or TPE due to limited single element transactions and the nature of the markets in which the Company competes, and, as such, the Company typically determines its relative selling price using BESP.

The Company uses BESP in its allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact if the product or service were sold by the Company on a standalone basis.

The Company’s determination of BESP involves the consideration of several factors based on the specific facts and circumstances of each arrangement. Specifically, the Company considers the cost to produce the deliverable, the anticipated margin on that deliverable, the selling price and profit margin for similar parts, the Company’s ongoing pricing strategy and policies (as evident from the price list established and updated by management on a regular basis), the value of any enhancements that have been built into the deliverable and the characteristics of the varying markets in which the deliverable is sold.

The Company analyzes the selling prices used in its allocation of arrangement consideration at a minimum on an annual basis. Selling prices will be analyzed on a more frequent basis if a significant change in the Company’s business necessitates a more timely analysis or if the Company experiences significant variances in its selling prices.

Each deliverable within the Company’s multiple-deliverable revenue arrangements is accounted for as a separate unit of accounting under the guidance of FASB ASU 2009-13 if both of the following criteria are met: the delivered item or items have value to the customer on a standalone basis; and for an arrangement that includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered item(s) is considered probable and substantially in the control of the Company. The Company considers a deliverable to have standalone value if the item is sold separately by the Company or another vendor or if the item could be resold by the customer. Further, the Company’s revenue arrangements generally do not include a general right of return relative to delivered products.

Deliverables not meeting the criteria for being a separate unit of accounting are combined with a deliverable that does meet that criterion. The appropriate allocation of arrangement consideration and recognition of revenue is then determined for the combined unit of accounting.

WEIGHTED-AVERAGE SHARES

Weighted-average shares were calculated as follows:

Equity instruments to purchase 4,402 and 9134,301 shares of common stock were not included in the calculation of diluted net earnings per share for the three and six months ended September 30,December 31, 2012, because the equity instruments were anti-dilutive. Equity instruments to purchase 1,500 and 925 shares of common stock were not included in the calculation of diluted net earnings per share for the three and six months ended December 31, 2011, respectively, because the equity instruments were anti-dilutive.

C. Acquisitions

MICRONETICS ACQUISITION

On June 8, 2012, the Company and Wildcat Merger Sub Inc., a newly formed, wholly-owned subsidiary of the Company (the “Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Micronetics, Inc. (“Micronetics”). On August 8, 2012, the transaction was closed. The Merger Sub merged with and into Micronetics with Micronetics continuing as the surviving company and wholly-owned subsidiary of the Company.

Headquartered in Hudson, NH, Micronetics is a leading designer and manufacturer of microwave and radio frequency (RF) subsystems and components for defense and commercial customers.

Pursuant to the terms of the Merger Agreement, at the closing of the merger on August 8, 2012, each share of common stock of Micronetics issued and outstanding immediately prior to the closing was converted into the right to receive $14.80 in cash, without interest (the “Merger Consideration”). All outstanding options to acquire shares of Micronetics common stock that were vested as of the closing were cancelled and the holders of such options were entitled to receive an amount of cash equal to the product of the total number of shares previously subject to such vested options and the excess of the Merger Consideration over the exercise price per share. All outstanding Micronetics stock options that were unvested at the closing were replaced by Mercury. The replacement stock options granted were determined based on a conversion ratio provided in the Merger Agreement. Micronetics existing bank debt was paid in full by Mercury on the closing date. Mercury funded the acquisition with cash on hand.

The following table presents the net purchase price and itsthe preliminary allocation forfair values of the acquisitionassets and liabilities of Micronetics:

The amounts above represent the preliminary fair value estimates as of September 30,December 31, 2012 and are subject to subsequent adjustment as the Company obtains additional information during the measurement period ending August 7, 2013 and finalizes its fair value estimates. Any subsequent adjustments to these fair value estimates occurring during the measurement period will result in an adjustment to goodwill or income, as applicable.

The goodwill of $45,808$46,509 arising from the Micronetics acquisition largely reflects the potential synergies and expansion of the Company’s service offerings across product segments and markets complementary to the Company’s existing products and markets. The Micronetics acquisition provides the Company with additional capability and expertise related to microwave and radio frequency technology. The acquisition is directly aligned with the Company’s strategy of expanding ourits capabilities, services and offerings along the sensor processing chain.

For the three and six months ended September 30,December 31, 2012, Micronetics’ revenue of $4,907$9,499 and $14,406, respectively, and net loss of $1,619$2,894 and $4,513, respectively, were included in the Company’s consolidated statements of operations. The Company has not furnished pro forma financial information relating to the Micronetics acquisition because such information is not material to the Company’s financial results.

D. Goodwill

The following table sets forth the changes in the carrying amount of goodwill for the threesix months ended September 30,December 31, 2012:

In the threesix months ended September 30,December 31, 2012, there were no triggering events, as defined by FASB ASC 350, which required an interim goodwill impairment test. The Company performs its annual goodwill impairment test in the fourth quarter of each fiscal year. The goodwill adjustment for the KOR acquisition is the result of changes in fair value estimates derived from additional information gainedobtained during the measurement period which endsended December 30, 2012.

The Company determines its reporting units in accordance with FASB ASC 350, by assessing whether discrete financial information is available and if management regularly reviews the operating results of that component. Following this assessment, the Company determined that its reporting units are the same as its operating segments, ACS and MFS.

E. Acquired Intangible Assets

Acquired intangible assets consisted of the following:

Estimated future amortization expense for acquired intangible assets remaining at September 30,December 31, 2012 is as follows:

The following table summarizes the preliminary estimated fair value of acquired intangible assets arising as a result of the Micronetics acquisition. These assets are included in the Company’s gross and net carrying amounts as of September 30,December 31, 2012.

F. Fair Value of Financial Instruments

The Company measures at fair value certain financial assets and liabilities, including cash equivalents and restricted cash. FASB ASC 820,Fair Value Measurement and Disclosures, specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs have created the following fair-value hierarchy:

Level 1—Quoted prices for identical instruments in active markets;

Level 2—Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and

Level 3—Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.

The following table summarizes the Company’s financial assets measured at fair value on a recurring basis at September 30,December 31, 2012:

The carrying values of cash and cash equivalents, including all U.S. Treasury bills and money market funds, accounts receivable and payable, and accrued liabilities approximate fair value due to the short-term maturities of these assets and liabilities.

G. Inventory

Inventory is stated at the lower of cost (first-in, first-out) or market value, and consists of materials, labor and overhead. On a quarterly basis, the Company uses consistent methodologies to evaluate inventory for net realizable value. The Company reduces the value of inventory for excess and obsolete inventory, consisting of on-hand and non-cancelable on-order inventory in excess of estimated usage. The excess and obsolete inventory evaluation is based upon assumptions about future demand, history, product mix and possible alternative uses. Inventory was comprised of the following:

The $14,593$14,938 increase of inventory was primarily due to inventory from the Micronetics acquisition, valued at $12,080 at the date of acquisition. There are no amounts in inventory relating to contracts having production cycles longer than one year.

H. Debt

Senior SecuredUnsecured Credit Facility

As of September 30,On October 12, 2012, the Company hadentered into a loan and securitycredit agreement (the “Loan“Credit Agreement”) with Silicon Valley Bank that provided a $35,000 revolving line of credit (the “Revolver”), with interest payable monthly and the principal due at the February 11, 2014 maturity of the Revolver. The Company has had no borrowings under the Loan Agreement since inception and was in compliance with all covenants as of September 30, 2012.

The Company terminated the Loan Agreement on October 12, 2012, in connection with entering into a new senior unsecured revolving credit facility with a syndicate of commercial banks, with KeyBank National Association acting as the administrative agent. See Note N Subsequent Events.The Credit Agreement provides for a $200,000 senior unsecured revolving line of credit (the “Revolver”). The Company can borrow up to $200,000 based on consolidated EBITDA for the four quarters ended December 31, 2012 and subject to compliance with the financial covenants discussed below. The Revolver is available for working capital, acquisitions, and general corporate purposes of the Company and its subsidiaries. The Revolver is available for borrowing during a five year period, with interest payable periodically during such period as provided in the Credit Agreement and principal due at the maturity of the Revolver.

The Credit Agreement has an accordion feature permitting the Company to request from the lenders an increase in the aggregate amount of the credit facility in the form of an incremental revolver or term loan in an amount not to exceed $50,000. Any such increase would require only the consent of the lenders increasing their respective commitments under the credit facility.

The interest rates applicable to borrowings under the Credit Agreement involve various rate options that are available to the Company. The rates are calculated using a combination of conventional base rate measures plus a margin over those rates. The base rates consist of LIBOR rates or prime rates. The actual rates will depend on the level of these underlying rates plus a margin based on the Company’s leverage at the time of borrowing.

Borrowings under the Credit Agreement are senior unsecured loans. Each of the Company’s domestic subsidiaries is a guarantor under the Credit Agreement.

The Credit Agreement provides for conventional affirmative and negative covenants, including a maximum leverage ratio of 3.50x and a minimum interest coverage ratio of 3.0x. Each of the two ratios referred to above is

calculated based on consolidated EBITDA, as defined in the Credit Agreement, for each consecutive four fiscal quarter period, after giving pro forma effect for any acquisitions or dispositions. Acquisitions are permitted under the Credit Agreement without any dollar limitation so long as, among other requirements, no default or event of default exists or would result therefore; as of December 31, 2012, the Company is in compliance with a maximum leverage ratio of 3.25x and a minimum interest coverage ratio of 3.0x, in each case, after giving pro forma effect to the applicable acquisition. In addition, the Credit Agreement contains certain customary representations and warranties, and events of default.

As of December 31, 2012, there was $77,000 of borrowing capacity available. There were no borrowings outstanding on the Credit Agreement; however, there were outstanding letters of credit of $3,000. The Company was in compliance with all covenants and conditions under the Credit Agreement.

Senior Secured Credit Facility

In connection with entering into the Credit Agreement, on October 12, 2012, the Company terminated its Loan and Security Agreement with Silicon Valley Bank dated February 12, 2010, as amended on March 30, 2011 (the “Loan Agreement”). The Loan Agreement provided for a $35,000 revolving line of credit. The Company terminated the Loan Agreement early without penalty. Silicon Valley Bank released its security interests in the Company’s assets in connection with the termination of the Loan Agreement.

I. Commitments and Contingencies

LEGAL CLAIMS

The U.S. Department of Justice (“DOJ”) conducted an investigation into the conduct of certain former employees of PDIParagon Dynamics, Inc. (“PDI”) (which was acquired by the Company in connection with the acquisition of KOR Electronics on December 30, 2011) in the 2008-2009 time frame, asserting, among other things, that such conduct may have constituted a violation of the Procurement Integrity Act. On August 31, 2012, the DOJ and PDI entered into a settlement agreement related to the investigation pursuant to which the DOJ released PDI and its affiliates from any civil monetary claims relating to the alleged conduct. PDI did not admit liability for the alleged conduct in the settlement. We were indemnified with respect to this matter by the former shareholders of KOR Electronics pursuant to the Company’s merger agreement with KOR dated December 30, 2011.

In addition to the foregoing, the Company is subject to litigation, claims, investigations and audits arising from time to time in the ordinary course of our business. Although legal proceedings are inherently

unpredictable, the Company believes that it has valid defenses with respect to any matters currently pending against the Company and intends to defend itself vigorously. The outcome of these matters, individually and in the aggregate, is not expected to have a material impact on the Company’s cash flows, results of operations, or financial position.

INDEMNIFICATION OBLIGATIONS

The Company’s standard product sales and license agreements entered into in the ordinary course of business typically contain an indemnification provision pursuant to which the Company indemnifies, holds harmless, and agrees to reimburse the indemnified party for losses suffered or incurred by the indemnified party in connection with any patent, copyright or other intellectual property infringement claim by any third party with respect to the Company’s products. Such provisions generally survive termination or expiration of the agreements. The potential amount of future payments the Company could be required to make under these indemnification provisions is, in some instances, unlimited.

PURCHASE COMMITMENTS

As of September 30,December 31, 2012, the Company has entered into non-cancelable purchase commitments for certain inventory components and services used in its normal operations. The purchase commitments covered by these agreements are for less than one year and aggregate to $15,004.$12,608.

J. Stock-Based Compensation

STOCK OPTION PLANS

The number of shares authorized for issuance under the Company’s 2005 Stock Incentive Plan, , as amended and restated (the “2005 Plan”), is 6,0927,764 shares at September 30,December 31, 2012. On October 17, 2012, the Company’s shareholders approved an increase in the number of shares authorized for issuance under the 2005 plan to 7,592 shares, an increase of 1,500 shares. The 2005 Plan will be increased by any future cancellations, forfeitures or terminations (other than by exercise) under the Company’s 1997 Stock Option Plan (the “1997 Plan”). The 2005 Plan provides for the grant of non-qualified and incentive stock options, restricted stock, stock appreciation rights and deferred stock awards to employees and non-employees. All stock options are granted with an exercise price of not less than 100% of the fair value of the Company’s common stock at the date of grant and the options generally have a term of seven years. There were 7922,223 shares available for future grant under the 2005 Plan at September 30,December 31, 2012. Subsequent to September 30, 2012, the Company’s shareholders approved an increase of 1,500 shares.

The number of shares authorized for issuance under the 1997 Plan was 8,650 shares, of which 100 shares could be issued pursuant to restricted stock grants. The 1997 Plan provided for the grant of non-qualified and incentive stock options and restricted stock to employees and non-employees. All stock options were granted with an exercise price of not less than 100% of the fair value of the Company’s common stock at the date of grant. The options typically vest over periods up to four years and have a maximum term of 10 years. Following shareholder approval of the 2005 Plan on November 14, 2005, the Company’s Board of Directors determined that no further grants of stock options or other awards would be made under the 1997 Plan, and the 1997 Plan subsequently expired in June 2007. The foregoing does not affect any outstanding awards under the 1997 Plan, which remains in full force and effect in accordance with their terms.

EMPLOYEE STOCK PURCHASE PLAN

The number of shares authorized for issuance under the Company’s 1997 Employee Stock Purchase Plan, as amended and restated (“ESPP”), is 1,400 shares. Under the ESPP, rights are granted to purchase shares of common stock at 85% of the lesser of the market value of such shares at either the beginning or the end of each six-month offering period. The ESPP permits employees to purchase common stock through payroll deductions, which may not exceed 10% of an employee’s compensation as defined in the ESPP. There were no52 and 58 shares issued under the ESPP during the threesix months ended September 30,December 31, 2012 and 2011. Shares available for future purchase under the ESPP totaled 360307 at September 30,December 31, 2012.

STOCK OPTIONAND AWARD ACTIVITY

The following table summarizes activity of the Company’s stock option plans since June 30, 2011:

On August 8, 2012, the Company completed its acquisition of Micronetics. Pursuant to the terms of the Merger Agreement, all outstanding options to acquire shares of Micronetics common stock that were vested at the closing were cancelled and the holders of such options received an amount of cash equal to the product of the total number of shares previously subject to such vested options and the excess of the merger consideration over the exercise price per share. All outstanding Micronetics stock options that were unvested at the closing were replaced by the Company. The replacement stock options granted were determined based on a conversion ratio provided in the Merger Agreement. The 271 of stock options granted in the table above reflect the replacement of the unvested Micronetics stock options as of August 8, 2012.

STOCK OPTION ASSUMPTIONS

The following table sets forth the weighted-average key fair value results and assumptions for stock options granted during the three and six months ended September 30,December 31, 2012 and 2011:

The following table summarizes the status of the Company’s non-vested restricted stock awards since June 30, 2011:

STOCK-BASED COMPENSATION EXPENSE

The Company recognized the full expense of its share-based payment plans in the consolidated statements of operations for the three and six months ended September 30,December 31, 2012 and 2011 in accordance with FASB ASC 718 and did not capitalize any such costs on the consolidated balance sheets, as such costs that qualified for capitalization were not material. Under the fair value recognition provisions of FASB ASC 718, stock-based compensation cost is measured at the grant date based on the value of the award and is recognized as expense over the service period. The following table presents share-based compensation expenses from continuing operations included in the Company’s consolidated statementstatements of operations:

K. Operating Segment, Geographic Information and Significant Customers

Operating segments are defined as components of an enterprise evaluated regularly by the Company’s senior management in deciding how to allocate resources and assess performance. The Company is presently organized in two operating segments. These reportable segments were determined based upon the nature of the products offered to customers, the market characteristics of each operating segment and the Company’s management structure:

The accounting policies of the reportable segments are the same as those described in “Note B: Summary of Significant Accounting Policies.” Beginning with the three months ended March 31, 2012, theThe profitability measure employed by the Company and its chief operating decision maker (“CODM”) as the basis for allocating resources to segments and assessing segment performance is adjusted EBITDA. The Company believes the adjusted EBITDA financial measure assists in providing an enhanced understanding of its underlying operational measures to manage its business, to evaluate its performance compared to prior periods and the marketplace, and to establish operational goals. The Company believes that adjusted EBITDA provides an additional basis for decision making and assessing segment performance than income (loss) from operations prior to stock compensation expense which was used prior to March 31, 2012.

Adjusted EBITDA is defined as earnings from continuing operations before interest income and expense, income taxes, depreciation, amortization of acquired intangible assets, restructuring, impairment of long-lived assets, acquisition costs and other related expenses, fair value adjustments from purchase accounting and stock-based compensation costs. Prior year’s amounts have been presented to reflect the current profitability measures

for comparative purposes. Additionally, asset information by reportable segment is not reported because the Company and its CODM utilize consolidated asset information when making business decisions. The following is a summary of the performance of the Company’s operations by reportable segment:

		ACS				MFS				Eliminations				Total
THREE MONTHS ENDED DECEMBER 31, 2012
Net revenues to unaffiliated customers		$	43,453			$	7,862			$	(1,511	)		$	49,804
Intersegment revenues			3,239				4				(3,243	)			—
Net revenues		$	46,692			$	7,866			$	(4,754	)		$	49,804
Adjusted EBITDA		$	2,376			$	(727	)		$	(650	)		$	999
THREE MONTHS ENDED DECEMBER 31, 2011
Net revenues to unaffiliated customers		$	64,062			$	5,191			$	(1,294	)		$	67,959
Intersegment revenues			1,996				—				(1,996	)			—
Net revenues		$	66,058			$	5,191			$	(3,290	)		$	67,959
Adjusted EBITDA		$	18,097			$	1,065			$	(325	)		$	18,837
SIX MONTHS ENDED DECEMBER 31, 2012
Net revenues to unaffiliated customers		$	81,261			$	17,778			$	193			$	99,232
Intersegment revenues			8,147				12				(8,159	)			—
Net revenues		$	89,408			$	17,790			$	(7,966	)		$	99,232
Adjusted EBITDA		$	1,942			$	726			$	(27	)		$	2,641
SIX MONTHS ENDED DECEMBER 31, 2011
Net revenues to unaffiliated customers		$	109,458			$	9,363			$	(1,740	)		$	117,081
Intersegment revenues			3,929				—				(3,929	)			—
Net revenues		$	113,387			$	9,363			$	(5,669	)		$	117,081
Adjusted EBITDA		$	26,251			$	1,573			$	(259	)		$	27,565

The following table reconciles the Company’s net income, the most directly comparable GAAP financial measure, to its adjusted EBITDA: