Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
Treasury Stock, Shares	(1,659,000)
Beginning Balance at Dec. 31, 2013	$ 116,467	$ 169	$ 117,147	$ 11,840	$ 461	$ (13,150)
Beginning Balance, Shares at Dec. 31, 2013		16,936
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	41			41
Other comprehensive (loss) income	(3,908)				(3,908)
Stock-based compensation	3,771		3,771
Payment of Stock Registration Fee	41		(41)
Excess tax shortfall on share-based awards			(2)
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	(2)
Issuance of common stock under employee stock purchase plan	138		138
Common stock issued under benefit plan, shares		12
Shares withheld, repurchased and retired related to minimum statutory tax withholding requirements	(481)		(481)
Payment of restricted stock withholdings, shares		(35)
Exercise of stock options and issuance of restricted stock awards, net of forfeitures	$ 473	$ 3	470
Exercise of stock options, vesting of restricted stock awards		240
Ending Balance, Shares at Dec. 31, 2014	15,493,752	17,153
Ending Balance at Dec. 31, 2014	$ 116,540	$ 172	121,084	11,881	(3,447)	(13,150)
Treasury Stock, Shares	(1,658,991)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ 2,253			2,253
Other comprehensive (loss) income	(4,153)				(4,153)
Stock-based compensation	3,734		3,734
Payment of Stock Registration Fee	0
Issuance of common stock under employee stock purchase plan	291		291
Common stock issued under benefit plan, shares		28
Shares withheld, repurchased and retired related to minimum statutory tax withholding requirements	(578)		(578)
Payment of restricted stock withholdings, shares		(27)
Exercise of stock options and issuance of restricted stock awards, net of forfeitures	$ 89	$ 1	88
Exercise of stock options, vesting of restricted stock awards		182
Ending Balance, Shares at Dec. 31, 2015	15,677,323	17,336
Ending Balance at Dec. 31, 2015	$ 118,176	$ 173	124,619	14,134	(7,600)	(13,150)
Treasury Stock, Shares	(1,658,991)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	$ (7,517)			(7,517)
Other comprehensive (loss) income	(9,209)				(9,209)
Stock-based compensation	3,651		3,651
Payment of Stock Registration Fee	(4)
Issuance of common stock under employee stock purchase plan	146		146
Common stock issued under benefit plan, shares		18
Shares withheld, repurchased and retired related to minimum statutory tax withholding requirements	(313)		(313)
Deferred Tax Expense from Stock Options Exercised			(869)
Payment of restricted stock withholdings, shares		(32)
Exercise of stock options and issuance of restricted stock awards, net of forfeitures	$ 2,437	$ 11	2,426
Exercise of stock options, vesting of restricted stock awards		1,099
Ending Balance, Shares at Dec. 31, 2016	16,761,923	18,421
Ending Balance at Dec. 31, 2016	$ 106,502	$ 184	$ 129,660	$ 6,617	$ (16,809)	$ (13,150)
Treasury Stock, Shares	(1,658,991)