Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Shareholders' Equity (Parenthetical)

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Consolidated Statements of Shareholders' Equity (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income Tax Expense from the Exercise of Stock Options $ 1,614 $ 22 $ 15
Paid-In Capital
     
Income Tax Expense from the Exercise of Stock Options 1,614 22 15
Accumulated Other Comprehensive Income (Loss)
     
Retirement Liability Adjustment, Net of Income Taxes 472 19 392
Mark to Market Adjustments for Derivatives, net of Income Taxes 44 52 29
Comprehensive Income (Loss)
     
Retirement Liability Adjustment, Net of Income Taxes 472 19 392
Mark to Market Adjustments for Derivatives, net of Income Taxes 44 52 29
Common Stock
     
Income Tax Expense from the Exercise of Stock Options 1,614 22 15
Common Class B Stock
     
Income Tax Expense from the Exercise of Stock Options $ 1,614 $ 22 $ 15