Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net income (loss)	$ 16,719	$ 13,758	$ 34,225	$ (14,794)
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	2,739	2,301	15,160	5,734
Change in fair value of derivative instruments, net of tax	(3,212)	(525)	(2,882)	(799)
Foreign currency translation adjustments	(1,265)	(8,022)	(9,574)	(9,395)
Other comprehensive income (loss), net of tax	(1,738)	(6,246)	2,704	(4,460)
Comprehensive income (loss)	$ 14,981	$ 7,512	$ 36,929	$ (19,254)