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Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment [Roll Forward]      
Balance, beginning $ (27,073) $ 24,906 $ 10,850
Pretax income (loss) (69,817) (51,979) 14,056
Balance, ending (96,890) (27,073) 24,906
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges [Roll Forward]      
Balance, beginning (3,401) (5,596) (10,091)
Pretax income (loss) (1,664) (1,586) (21,250)
Income tax effect 538 382 7,984
Reclassification of unrealized loss (gain) 5,366 5,200 27,481
Reclassification of deferred income taxes (1,771) (1,801) (10,011)
Hedge ineffectiveness     460
Income tax effect     (169)
Balance, ending (932) (3,401) (5,596)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans [Roll Forward]      
Balance, beginning (9,751) 701 0
Pretax income (loss) 2,245 (13,506) 935
Income tax effect (561) 3,179 (234)
Reclassification of unrealized loss (gain) 559 (166) 0
Reclassification of deferred income taxes (140) 41 0
Balance, ending (7,648) (9,751) 701
Balance, beginning (40,225) 20,011 759
Pretax income (loss) (69,236) (67,071) (6,259)
Income tax effect (23) 3,561 7,750
Reclassification of Unrealized Loss (Gain) 5,925 5,034 27,481
Reclassification of deferred income taxes (1,911) (1,760) (10,011)
Income tax effect     (169)
Balance, ending $ (105,470) $ (40,225) $ 20,011