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Consolidated Statements of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Consolidated Statements of Comprehensive Income (Loss) [Abstract]    
Net income $ 5,565 $ 80,836
Defined benefit pension plans    
Amortization of actuarial (gain) loss, net of tax of ($2) and $861, respectively (4) 1,395
Amortization of prior service costs, net of tax of $- and $9, respectively 0 14
Other comprehensive income (loss), net of tax (4) 1,409
Comprehensive income $ 5,561 $ 82,245