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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2011
Significant Accounting Policies [Abstract] |
Schedule Of Basic Weighted Average Shares Reconciles To Diluted Weighted Average Shares |
|  | 2011 |  |  | 2010 |  |  | 2009 |
|  | (In thousands) |
Basic weighted average common shares outstanding |  |  | 82,145 |  |  |  | 80,466 |  |  |  | 79,716 |
Dilutive effect of stock options, DCUs and unvested shares |  |  | 1,398 |  |  |  | 1,517 |  |  |  | 1,011 |
Diluted weighted average common shares outstanding |  |  | 83,543 |  |  |  | 81,983 |  |  |  | 80,727 |
Property And Equipment At Cost, Depreciation And Amortization Estimated Useful Lives |
Land improvements |  |  | 8 to 12 years |
Buildings and improvements |  |  | 8 to 30 years |
Machinery, equipment and other |  |  | 3 to 12 years |
Office and transportation equipment |  |  | 3 to 10 years |
Patents |  |  | 5 to 17 years |
Trade names |  |  | 10 to 20 years |
Customer relationships |  |  | 3 to 20 years |
Non-compete agreements |  |  | 2 to 5 years |
Unpatented technology and other |  |  | 4 to 20 years

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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