Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Total
Balance, at Dec. 31, 2012	$ 111	$ 46,290	$ 270,311	$ (25,468)	$ (3,669)	$ 287,575
Net (loss) income			29,290			29,290
Other comprehensive income (loss) net of tax:
Pension liability adjustment					2,561	2,561
Foreign currency translation adjustment					(3,475)	(3,475)
Unrealized derivative loss on cash flow hedges						0
Issuance of Common shares, net of shares withheld for taxes		(1,410)		737		(673)
Stock based compensation and related excess tax benefit		2,359				2,359
Cash dividends on common stock paid to shareholders			(1,240)			(1,240)
Balance, at Dec. 31, 2013	111	47,239	298,361	(24,731)	(4,583)	316,397
Net (loss) income			25,656			25,656
Other comprehensive income (loss) net of tax:
Pension liability adjustment					(2,446)	(2,446)
Foreign currency translation adjustment					(4,863)	(4,863)
Unrealized derivative loss on cash flow hedges						0
Issuance of Common shares, net of shares withheld for taxes		(2,467)		1,613		(854)
Stock based compensation and related excess tax benefit		3,343				3,343
Cash dividends on common stock paid to shareholders			(1,345)			(1,345)
Balance, at Dec. 31, 2014	111	48,115	322,672	(23,118)	(11,892)	335,888
Net (loss) income			(44,445)			(44,445)
Other comprehensive income (loss) net of tax:
Pension liability adjustment					1,020	1,020
Foreign currency translation adjustment					(6,947)	(6,947)
Unrealized derivative loss on cash flow hedges					(121)	(121)
Purchase of Common shares for Treasury				(1,587)		(1,587)
Issuance of Common shares, net of shares withheld for taxes		(3,158)		2,114		(1,044)
Stock based compensation and related excess tax benefit		1,724				1,724
Cash dividends on common stock paid to shareholders			(1,656)			(1,656)
Balance, at Dec. 31, 2015	$ 111	$ 46,681	$ 276,571	$ (22,591)	$ (17,940)	$ 282,832