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, 2009	$ 318,208	$ 230	$ (3,010)		$ 178,129	$ 156,387	$ (13,528)
Balance (in shares) at Dec. 31, 2009		23,115	(209)	0
Comprehensive Loss:
Net (loss) income	(5,640)					(5,640)
Foreign currency translation	(536)						(536)
Unrecognized pension and postretirement benefit costs, net of tax benefit of $2,312, $1,965 and $1,116	(1,748)						(1,748)
Long-term incentive plan	1,278				1,278
Exercise of stock options and other	1,897	1	784		1,112
Exercise of stock options and other (in shares)		34	46
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) income	(1,760)					(1,760)
Foreign currency translation	(941)						(941)
Unrecognized pension and postretirement benefit costs, net of tax benefit of $2,312, $1,965 and $1,116	(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) income	(9,748)					(9,748)	0
Foreign currency translation	2,369						2,369
Unrecognized pension and postretirement benefit costs, net of tax benefit of $2,312, $1,965 and $1,116	(3,616)						(3,616)
Embedded Conversion Option, Net of Tax Benefit	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