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Basis of Presentation | 9 Months Ended
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Aug. 28, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Basis of Presentation [Text Block] | BASIS OF PRESENTATION Consolidated financial statements for the interim periods included herein are unaudited; however, such financial statements contain all adjustments, including normal recurring accruals, which, in the opinion of Management, are necessary for the fair statement of the consolidated financial position of Ameron International Corporation and all subsidiaries (the "Company" or "Ameron" or the "Registrant") as of August 28, 2011, and consolidated results of operations for the three and nine months ended August 28, 2011 and cash flows for the nine months ended August 28, 2011. Accounting measurements at interim dates inherently involve greater reliance on estimates than at year-end. Results of operations for the periods presented are not necessarily indicative of the results to be expected for the full year. For accounting consistency, the quarter typically ends on the Sunday closest to the end of the relevant calendar month. The Company’s fiscal year ends on November 30, regardless of the day of the week. Each quarter consists of approximately 13 weeks, but the number of days per quarter can vary from period to period. The quarters ended August 28, 2011 and August 29, 2010 each consisted of 91 days. The nine months ended August 28, 2011 and August 29, 2010 consisted of 271 and 272 days, respectively. The consolidated financial statements do not include certain footnote disclosures and financial information normally included in consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America and, therefore, should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended November 30, 2010 ("2010 Annual Report"). On July 1, 2011, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with National Oilwell Varco, Inc. ("Parent" or "NOV"), and NOV Sub A, Inc., a wholly-owned subsidiary of Parent (“Merger Sub”), pursuant to which, subject to the terms and conditions set forth in the Merger Agreement, the Company will become a wholly-owned subsidiary of National Oilwell Varco, Inc. at closing. Refer to Note 18 - Merger Agreement with National Oilwell Varco, Inc. for further details.

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