Cover
Cover - USD ($) | 12 Months Ended | ||
Dec. 31, 2019 | Feb. 24, 2020 | Jun. 28, 2019 | |
Cover page. | |||
Document Type | 10-K/A | ||
Document Period End Date | Dec. 31, 2019 | ||
Entity File Number | 1-5415 | ||
Entity Registrant Name | A. M. CASTLE & CO. | ||
Entity Incorporation, State or Country Code | MD | ||
Entity Tax Identification Number | 36-0879160 | ||
Entity Address, Postal Zip Code | 60523 | ||
City Area Code | 847 | ||
Local Phone Number | 455-7111 | ||
Title of 12(g) Security | Common Stock, Par Value $0.01 Per Share | ||
Trading Symbol | CTAM | ||
Entity Well-known Seasoned Issuer | No | ||
Entity Voluntary Filers | No | ||
Entity Current Reporting Status | Yes | ||
Entity Interactive Data Current | Yes | ||
Entity Small Business | true | ||
Entity Emerging Growth Company | false | ||
Entity Shell Company | false | ||
Entity Public Float | $ 1,584,996 | ||
Entity Common Stock, Shares Outstanding | 3,649,658 | ||
Documents Incorporated by Reference | None | ||
Entity Central Index Key | 0000018172 | ||
Current Fiscal Year End Date | --12-31 | ||
Document Fiscal Year Focus | 2019 | ||
Document Fiscal Period Focus | FY | ||
Amendment Flag | true | ||
Document Annual Report | true | ||
Document Transition Report | false | ||
Entity Address, Address Line One | 1420 Kensington Road, Suite 220, | ||
Entity Address, City or Town | Oak Brook, | ||
Entity Address, State or Province | IL | ||
Entity Filer Category | Non-accelerated Filer | ||
Amendment Description | This Amendment No. 1 to Form 10-K (the “Amendment”) amends the Annual Report on Form 10-K for the fiscal year ended December 31, 2019 originally filed with the U.S. Security and Exchange Commission on February 27, 2020 (the “Original Filing”) by A. M. Castle & Co., a Maryland corporation ("A.M. Castle & Co.," the “Company,” “we,” or “us”). We are filing the Amendment to present the information required by Part III of Form 10-K as we will not file our definitive proxy statement within 120 days of the end of our year ended December 31, 2019. In addition, the Company is revising Item 1A. “Risk Factors” to add a risk factor regarding the Coronavirus Disease 2019 (COVID-19). The reference on the cover page of the 2019 Form 10-K to the incorporation by reference of portions of the Company's definitive proxy statement into Part III of the 2019 Form 10-K is hereby deleted. |