Condensed Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid - In Capital [Member]	Retained Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at Dec. 31, 2015	$ 100,397	$ 18	$ 135,714	$ (35,320)	$ (15)
Stock-based compensation expense	2,242	0	2,242	0	0
Issuance of shares for stock purchase and option plans	350	0	350	0	0
Cancellation of shares for payment of withholding tax	(187)	0	(187)	0	0
Repurchase of common stock	(4,095)	(1)	(4,094)	0	0
Stock option forfeitures	(145)	0	(145)	0	0
Dividends paid	(1,723)	0	0	(1,723)	0
Net loss	(12,529)	0	0	(12,529)	0
Foreign currency translation adjustments	(112)	0	0	0	(112)
BALANCE at Jun. 30, 2016	$ 84,198	$ 17	$ 133,880	$ (49,572)	$ (127)