Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income (loss)	$ 13,758	$ 4,749	$ (14,794)	$ 19,174
Other comprehensive income (loss):
Pension and other postretirement benefit adjustments, net of tax	2,301	3,577	5,734	12,660
Change in fair value of derivative instruments, net of tax	(525)	(27)	(799)	509
Foreign currency translation adjustments	(8,022)	4,528	(9,395)	3,938
Other comprehensive income, net of tax	(6,246)	8,078	(4,460)	17,107
Comprehensive income (loss)	$ 7,512	$ 12,827	$ (19,254)	$ 36,281