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 ($)	Retained Earnings USD ($)	Accumulated Other Comprehensive Income USD ($)
Stockholders' Equity Attributable to Parent at Dec. 31, 2010	$ 313,459	$ 231	$ (2,226)		$ 180,519	$ 150,747	$ (15,812)
Balance (in shares) at Dec. 31, 2010		23,149	(163)	0
Comprehensive Loss:
Net loss	(1,760)					(1,760)
Foreign currency translation	(941)						(941)
Unrecognized pension and postretirement benefit credits (costs), net of tax	(3,071)						(3,071)
Long-term incentive plan	3,260				3,260
Exercise of stock options and other	1,332	1	514		817
Exercise of stock options and other (in shares)		10	14
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
Unrecognized pension and postretirement benefit credits (costs), net of tax	(3,616)						(3,616)
Embedded Conversion Option, Net of Tax Benefit of $8,285	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)
Unrecognized pension and postretirement benefit credits (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