CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - 6 months ended Jun. 30, 2018 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income (loss)	Treasury stock
Beginning Balance (in shares) at Dec. 31, 2017		31,159
Beginning Balance at Dec. 31, 2017	$ 43,152	$ 34	$ 483,558	$ (443,419)	$ 10,709	$ (7,730)
Net income (loss)	9,357			9,357
Other comprehensive income (loss), currency translation adjustments, net of applicable tax	(96)
Other comprehensive income (loss), net of applicable tax	(10,953)				(10,953)
Stock Repurchased During Period, Shares		(2)
Stock-based compensation (in shares)		1,151
Stock-based compensation	874		874
Treasury Stock, Value, Acquired, Cost Method	(3)					(3)
Shares Paid for Tax Withholding for Share Based Compensation		277
Adjustments Related to Tax Withholding for Share-based Compensation	534					534
Ending Balance (in shares) at Jun. 30, 2018		32,031
Ending Balance at Jun. 30, 2018	$ 41,893	$ 34	$ 484,432	$ (434,062)	$ (244)	$ (8,267)