CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Statement of Comprehensive Income [Abstract]    
Net income (loss) $ 13,627 $ 14,580
Foreign currency translation adjustment (27,980) (327)
Derivative instruments designated as cash flow hedges:    
Unrealized gain (loss) on derivative instruments held at period end, net of tax 218 (180)
Unrealized gain (loss) reclassified into earnings 0 210
Pension and postretirement benefit plans reclassified into earnings, net of tax    
Amortization of loss 268 139
Other comprehensive income (loss) (27,494) (158)
Comprehensive income (loss) $ (13,867) $ 14,422