Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning balance (in shares) at Dec. 31, 2018		23,186,258
Beginning balance at Dec. 31, 2018	$ 66,329	$ 232	$ 582,574	$ (515,456)	$ (1,021)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(4,396)			(4,396)
Foreign currency translation adjustments	513				513
Issuances of common stock:
Restricted share awards (in shares)		333,552
Restricted share awards	0	$ 3	(3)
Restricted shares remitted by employees for taxes (in shares)		61,581
Restricted shares remitted by employees for taxes	(504)	$ (1)	(503)
Stock option exercises (in shares)		10,061
Stock option exercises	51		51
Performance-based restricted stock unit settlement (in shares)		203,524
Performance-based restricted stock unit settlement		$ 2	(2)
Restricted stock unit settlement (in shares)		9,999
Restricted stock unit settlement	0
Repurchase of common stock (in shares)		(243,755)
Repurchase of common stock	(2,228)	$ (2)	(2,226)
Stock-based compensation expense	1,465		1,465
Ending balance (in shares) at Mar. 31, 2019		23,438,058
Ending balance at Mar. 31, 2019	$ 61,230	$ 234	581,356	(519,852)	(508)
Beginning balance (in shares) at Dec. 31, 2019	23,369,433	23,369,433
Beginning balance at Dec. 31, 2019	$ 53,050	$ 234	582,404	(529,176)	(412)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(3,883)			(3,883)
Foreign currency translation adjustments	(1,948)				(1,948)
Issuances of common stock:
Restricted share awards (in shares)		398,500
Restricted share awards	0	$ 4	(4)
Restricted shares remitted by employees for taxes (in shares)		(84,043)
Restricted shares remitted by employees for taxes	(283)	$ (1)	(282)
Restricted stock unit settlement (in shares)		44,002
Restricted stock unit settlement	0
Forfeited restricted share awards (in shares)		(28,951)
Forfeited restricted share awards	$ 0
Repurchase of common stock (in shares)	(103,862)
Repurchase of common stock	$ (284)	$ (1)	(283)
Stock-based compensation expense	$ 1,326		1,326
Ending balance (in shares) at Mar. 31, 2020	23,595,079	23,595,079
Ending balance at Mar. 31, 2020	$ 47,978	$ 236	$ 583,161	$ (533,059)	$ (2,360)