Consolidated Statement of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Accumulated Other Comprehensive Loss	Additional Paid in Capital	Treasury Stock, at Cost	Accumulated Deficit
Balance at Dec. 31, 2014	$ 49,389	$ 136	$ (235,822)	$ 570,256	$ (70,375)	$ (214,806)
Balance, shares at Dec. 31, 2014		13,580
Stockholders' Equity Line Items
Amortization, issuance and forfeitures of restricted stock grants (in shares)		6
Amortization, issuance and forfeitures of restricted stock grants	546	0		546
Changes in pension liability and post-retirement benefit obligations, net of tax	1,627		1,627
Foreign currency translation adjustments	(1,397)		(1,397)
Net income	93,344					93,344
Balance at Mar. 31, 2015	$ 143,509	$ 136	$ (235,592)	$ 570,802	$ (70,375)	$ (121,462)
Balance, shares at Mar. 31, 2015		13,586