CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Total Comprehensive Loss, net [Member]	(Accumulated Deficit) Retained Earnings [Member]	Noncontrolling Interest in Subsidiary [Member]
Beginning Balance (in shares) at Dec. 31, 2017		35,838,000
Beginning Balance at Dec. 31, 2017	$ 237,719	$ 4	$ 305,362	$ (1,166)	$ (67,111)	$ 630
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of share options (in shares)		8,000
Vesting of restricted stock and performance stock awards (in shares)		102,000
Vesting of restricted stock and performance stock awards	(621)		(621)
Equity compensation	469		469
Stock repurchase and retirement (in shares)		(242,400)
Stock repurchase and retirement	(2,885)		(2,885)
Foreign currency translation adjustment, net of taxes	(23)			(23)
Net change in hedging transaction, net of taxes	(171)			(171)
Distribution to noncontrolling shareholder	(308)					(308)
Net (loss) income	1,921				1,642	279
Ending Balance (in shares) at Mar. 31, 2018		35,706,000
Ending Balance at Mar. 31, 2018	236,101	$ 4	302,325	(1,360)	(65,469)	601
Beginning Balance (in shares) at Dec. 31, 2018		35,626,000
Beginning Balance at Dec. 31, 2018	218,198	$ 4	303,048	(1,462)	(84,062)	670
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of share options (in shares)		4,000
Vesting of restricted stock and performance stock awards (in shares)		176,000
Vesting of restricted stock and performance stock awards	(777)		(777)
Equity compensation	531		531
Stock repurchase and retirement (in shares)		0
Foreign currency translation adjustment, net of taxes	53			53
Net change in hedging transaction, net of taxes	(252)			(252)
Distribution to noncontrolling shareholder	(367)					(367)
Net (loss) income	(1,376)				(1,767)	391
Ending Balance (in shares) at Mar. 31, 2019		35,806,000
Ending Balance at Mar. 31, 2019	$ 216,010	$ 4	$ 302,802	$ (1,661)	$ (85,829)	$ 694