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Stockholder's Equity (Details 3) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Summary of accumulated other comprehensive income/(loss)    
Unrecognized gains (losses) on cash flow hedges $ (6,957) $ (8,561)
Unrecognized gains (losses) on equity investments (216) (619)
Unrecognized gains (losses) on foreign currency translation (881) 0
Unrecognized actuarial gains (losses) 2,974 2,748
Totals $ (11,028) $ (11,928)