Consolidated Statement of Changes in Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Accumulated Other Comprehensive Loss	Additional Paid-In Capital	Treasury Stock, at Cost	Accumulated Deficit
Balance, shares at Dec. 31, 2014		13,580
Balance at Dec. 31, 2014	$ 49,389	$ 136	$ (235,822)	$ 570,256	$ (70,375)	$ (214,806)
Stockholders' Equity Line Items
Amortization, issuance and forfeitures of restricted stock grants (in shares)		3
Amortization, issuance and forfeitures of restricted stock grants	1,171			1,171
Changes in pension liability and post-retirement benefit obligations, net of tax	1,627		1,627
Foreign currency translation adjustments	(1,050)		(1,050)
Net income	99,472					99,472
Balance, shares at Jun. 30, 2015		13,583
Balance at Jun. 30, 2015	$ 150,609	$ 136	$ (235,245)	$ 571,427	$ (70,375)	$ (115,334)