Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total USD ($)	Common Shares USD ($)	Treasury Shares USD ($)	Preferred Stock	Additional Paid-in Capital USD ($)	(Accumulated Deficit) Retained Earnings USD ($)	Accumulated Other Comprehensive (Loss) Income USD ($)
Stockholders' Equity Attributable to Parent at Dec. 31, 2011	$ 312,279	$ 232	$ (1,712)		$ 184,596	$ 148,987	$ (19,824)
Balance (in shares) at Dec. 31, 2011		23,159	(149)	0
Comprehensive Loss:
Net loss	(9,748)					(9,748)
Foreign currency translation	2,369						2,369
Change in unrecognized pension and postretirement benefit costs, net of tax	(3,616)						(3,616)
Embedded Derivative, No Longer Bifurcated, Amount Reclassified to Stockholders' Equity	33,752				33,752
Long-term incentive plan	1,592				1,592
Exercise of stock options and other	712		1,033		(321)
Exercise of stock options and other (in shares)		52	90
Stockholders' Equity Attributable to Parent at Dec. 31, 2012	337,340	232	(679)		219,619	139,239	(21,071)
Balance (in shares) at Dec. 31, 2012		23,211	(59)	0
Comprehensive Loss:
Net loss	(33,962)					(33,962)
Foreign currency translation	(2,295)						(2,295)
Change in unrecognized pension and postretirement benefit costs, net of tax	4,623						4,623
Long-term incentive plan	2,877				2,877
Exercise of stock options and other	1,311	2	(88)		1,397
Exercise of stock options and other (in shares)		260	(3)
Stockholders' Equity Attributable to Parent at Dec. 31, 2013	309,894	234	(767)		223,893	105,277	(18,743)
Balance (in shares) at Dec. 31, 2013		23,471	(62)	0
Comprehensive Loss:
Net loss	(134,701)					(134,701)
Foreign currency translation	(5,377)						(5,377)
Change in unrecognized pension and postretirement benefit costs, net of tax	(21,445)						(21,445)
Long-term incentive plan	1,456				1,456
Exercise of stock options and other	493	2	(113)		604
Exercise of stock options and other (in shares)		159	(9)
Stockholders' Equity Attributable to Parent at Dec. 31, 2014	$ 150,320	$ 236	$ (880)		$ 225,953	$ (29,424)	$ (45,565)
Balance (in shares) at Dec. 31, 2014		23,630	(71)	0