Unaudited Condensed Consolidated Statement of Equity - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)	Non-controlling Interests
Beginning balance (in shares) at Dec. 31, 2016		59,685,000	2,029,000
Beginning balance at Dec. 31, 2016	$ 287,701	$ 6	$ (20,269)	$ 318,392	$ (956)	$ (9,830)	$ 358
Increase (Decrease) in Equity [Roll Forward]
Net (loss) income	(11,978)					(11,978)
Foreign currency translation adjustment	(8)				(8)
Stock issued in payment of stock purchase plan (in shares)			(20,000)
Stock issued under employee stock purchase plan	213			213
Common stock issued in payment of accrued liability	$ 188			188
Stock options exercised (in shares)	5,000	5,000
Stock options exercised	$ 7			7
Restricted stock granted (in shares)	80,783	80,000
Restricted stock forfeited (in shares)			27,000
Treasury stock purchased (in shares)			10,000
Treasury stock purchased	$ (102)		$ (102)
Stock compensation expense	3,180			3,180
Ending balance (in shares) at Mar. 31, 2017		59,770,000	2,046,000
Ending balance at Mar. 31, 2017	$ 279,201	$ 6	$ (20,371)	$ 321,980	$ (964)	$ (21,808)	$ 358