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Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) (USD $)
In Thousands, except Share data
9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Statement of Stockholders' Equity [Abstract]  
Change in unrealized securities gains arising during period, deferred tax$ 2,104$ 1,988
Reclassification adjustment for gains (losses) included in net income, deferred tax (benefit)93(900)
Change in unrecognized loss on cash flow hedges, deferred tax (benefit)(1,595)(3,153)
Repurchase of Class B common stock, shares 0
Change in pension obligation, deferred tax$ 1,936$ (1,178)
Common Class A [Member]
  
Statement of Stockholders' Equity [Abstract]  
Repurchase of Class B common stock, shares87,339 
Common Class B [Member]
  
Statement of Stockholders' Equity [Abstract]  
Repurchase of Class B common stock, shares37,863