Due to the net loss in the three months ended December 31, 2015, options and restricted stock in the amount of 5.4 million common shares were not included in computing diluted earnings per share because the effect would have been antidilutive. Options and restricted stock in the amount of 0.80.6 million and 0.9 million common shares, respectively, in the three months ended December 31, 20142016 and December 31, 2015, respectively, were not included in computing diluted earnings per share because the effect would have been antidilutive.

On October 1, 2015, we acquired SP Fiber in a stock purchase. The transaction included the acquisition of mills located in Dublin, GA and Newberg, OR, which produce lightweight recycled containerboard and kraft and bag paper. The Newberg mill also produced newsprint. As part of the transaction, we also acquired SP Fiber's 48 percent48% interest in GPS. GPS is a renewable energy joint venture providing steam to the Dublin mill and energyelectricity to Georgia Power. The purchase price was $281.7$278.8 million, net of cash received of $9.5 million. The transaction is subject to an unreceived estimated$9.2 million and a working capital settlement of $3.2 million.settlement. In addition, we paid $36.5 million for debt owed by GPS and thereby own the majority of the debt issued by GPS.

The preliminary purchase price allocation for the acquisition included $13.5 million of customer relationship intangible assets, $66.0$57.3 million of goodwill and $160.2$150.3 million of liabilities, including $13.7 million of debt primarily owed by GPS to third parties. We are amortizing the customer relationship intangibles over 20 years based on a straight-line basis because the amortization pattern was not reliably determinable. The fair value assigned to goodwill is primarily attributable to buyer-specific synergies expected to arise after the acquisition (e.g., enhanced reach of the combined organization and other synergies), the assembled work force of SP Fiber as well as due to establishing deferred tax liabilitiestaxes for the assets and liabilities acquired. The goodwill and intangibles willare not be amortizable for income tax purposes. We are in the process of analyzing the estimated values of all assets acquired and liabilities assumed including, among other things, obtaining third-party valuations of certain tangible and intangible assets as well as the fair value of certain contracts and the determination of certain tax balances, thus, the allocation of the purchase price is preliminary and subject to revision.

On July 1, 2015, pursuantMay 15, 2016, WestRock completed the Separation. Since the Separation, we have not beneficially owned any shares of Ingevity common stock and Ingevity has been an independent public company trading under the symbol “NGVT” on the New York Stock Exchange. We disposed of the former Specialty Chemicals segment in its entirety and ceased to consolidate its assets, liabilities and results of operations. Accordingly, we have presented the Business Combination Agreement, RockTennfinancial position and MWV completed a strategic combinationresults of their respective businesses. Pursuant tooperations of our former Specialty Chemicals segment as discontinued operations in the Business Combination Agreement, RockTenn and MWV became wholly owned subsidiaries of WestRock. RockTenn is the accounting acquirer.accompanying condensed consolidated financial statements for all periods presented.

The consideration for the Combination was $8,286.7 million. In connection with the Combination, RockTenn shareholders receivedSeparation, we and Ingevity entered into a separation and distribution agreement as well as various other agreements that provide a framework for the relationships between the parties going forward, including among others a tax matters agreement, a lease and ground service agreement with respect to our Covington, Virginia facility, an intellectual property agreement, a crude tall oil and black liquor soap skimming supply agreement, a trust agreement, an employee matters agreement and a transition services agreement. These agreements provided for the allocation between us and Ingevity of assets, employees, liabilities and obligations attributable to periods prior to, at and after the Separation and govern certain relationships between us and Ingevity after the Separation.

Prior to the Separation, Ingevity, then a wholly-owned subsidiary of WestRock, borrowed $500.0 million in contemplation of the Separation. In addition, Ingevity assumed an $80.0 million, 7.67% capital lease obligation due January 15, 2027 owed to the City of Wickliffe, KY. In contemplation of the Separation, Ingevity also funded a trust in the aggregate approximately 130.4amount of $68.9 million sharesto secure the balloon principal payment of that capital lease upon the lease’s maturity. We remain a co-obligor on the capital lease obligation; therefore, the capital lease assumed by Ingevity remains recorded in our Common Stock and approximately $667.8 millionCondensed Consolidated Financial Statements in cash.long-term debt. At the effective time of the Combination, each share of common stock, par value $0.01 per share, of MWV issued and outstanding immediately prior toSeparation, we recorded a $108.2 million long-term asset for the effective time of the Combination was converted into the right to receive 0.78 shares of our Common Stock. In the aggregate, MWV stockholders received approximately 131.2 million shares of our Common Stock (which includes shares issued under certain MWV equity awards that vested as a result of the Combination). Included in the consideration was approximately $210.9 million related to outstanding MWV equity awards that were replaced with WestRock equity awards with identical terms for pre-combination service. The amount related to post-combination service will be expensed over the remaining service period of the awards.

Restructuring and other costs, net are primarily associated with costs incurred to support the estimated fair valuesSeparation and consist primarily of advisory, legal, accounting and other professional fees.

In the first quarter of fiscal 2016, as part of our evaluation of whether events or changes in circumstances had occurred that would indicate whether it was more likely than not that the goodwill of our then-owned Specialty Chemicals reporting unit was impaired, we considered factors such as, but not limited to, macroeconomic conditions, industry and market considerations, and financial performance, including the planned revenue and earnings of the assets acquired and liabilities assumed by major class of asset and liabilities asreporting unit. We concluded that an impairment indicator had occurred related to the goodwill of the acquisition date, as well as adjustments made during fiscal 2016 (referredSpecialty Chemicals reporting unit and that the indicator was driven by market factors subsequent to as “measurement period adjustments”) (in millions):

NoneAccordingly, we performed a “Step 1” goodwill impairment test where we updated the discounted cash flow analysis used to determine the reporting unit’s initial fair value on July 1, 2015. We also compared those results to the valuations performed by our investment bankers in connection with the planned separation of our Specialty Chemicals business. Based on the results of the intangibles has significant residual value. The intangibles are expected to be amortized over estimated useful lives ranging from 1 to 20 years based onimpairment test and analysis, we concluded that the approximate pattern in which the economic benefits are consumed or straight-line if the pattern was not reliably determinable.

When we close a facility, if necessary, we recognize an impairment charge primarily to reduce the carrying value of equipment or other property to their estimated fair value less cost to sell, and record charges for severance and other employee related costs. Any subsequent change in fair value less cost to sell prior to disposition is recognized as identified; however, no gain is recognized in excess of the cumulative loss previously recorded. At the time of each announced closure, we generally expect to record future charges for equipment relocation, facility carrying costs, costs to terminate a lease or contract before the end of its term and other employee related costs. Although specific circumstances vary, our strategy has generally been to consolidate our sales and operations into large well-equipped plants that operate at high utilization rates and take advantage of available capacity created by operational excellence initiatives. Therefore, we transferhave transferred a substantial portion of each plant’s assets and production to our other plants. We believe these actions have allowed us to more effectively manage our business.