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Stockholder's Equity (Details 2) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Summary of accumulated other comprehensive income/(loss)    
Unrecognized losses on cash flow hedges $ (7,836) $ (8,561)
Unrecognized losses on equity investments (658) (619)
Unrecognized gains (losses) on foreign currency translation (2,348) 0
Unrecognized actuarial losses 2,748 2,748
Totals $ (13,590) $ (11,928)