Condensed Consolidated Statement of Stockholders' Equity Statement - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Common stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning balance, shares at Dec. 31, 2016		49,251,000
Beginning balance at Dec. 31, 2016	$ (20,696)	$ 49	$ 146,615	$ (166,800)	$ (560)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(9,926)			(9,926)
Other comprehensive income	$ 40				40
Stock options exercised and related tax activity, shares	0
Share-based compensation	$ 386		386
Ending balance, shares at Mar. 31, 2017		49,251,000
Ending balance at Mar. 31, 2017	$ (30,196)	$ 49	$ 147,001	$ (176,726)	$ (520)