CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Accumulated Deficit)
Beginning balance at Dec. 31, 2018	$ 202,013	$ 6	$ (33,237)	$ 343,536	$ 31	$ (108,323)
Beginning balance (in shares) at Dec. 31, 2018		62,163,000	(3,770,000)
Increase (Decrease) in Stockholders' Equity
Net loss	(33,915)					(33,915)
Foreign currency translation adjustment	$ 150				150
Sale of common stock (in shares)	0
Stock issued under employee stock purchase plan	$ 35			35
Stock issued under employee stock purchase plan (in shares)			(18,000)
Restricted stock awards granted (in shares)		924,000
Restricted stock awards forfeited (in shares)			299,000
Restricted stock units granted (in shares)		570,000
Stock surrendered for exercise of stock options (in shares)	0
Treasury stock purchased	$ (247)		$ (247)
Treasury stock purchased (in shares)	93,977		94,000
Stock compensation expense	$ 3,993			3,993
Stock issued in JP3 acquisition	$ 0
Stock issued in JP3 acquisition (in shares)	0
Stock options exercised (in shares)	0
Ending balance at Dec. 31, 2019	$ 172,029	$ 6	$ (33,484)	347,564	181	(142,238)
Ending balance (in shares) at Dec. 31, 2019		63,657,000	(4,145,000)
Increase (Decrease) in Stockholders' Equity
Net loss	(136,450)					(136,450)
Foreign currency translation adjustment	(200)				(200)
Sale of common stock	$ 339			339
Sale of common stock (in shares)	200,000	200,000
Stock issued under employee stock purchase plan	$ 123			123
Stock issued under employee stock purchase plan (in shares)			(78,000)
Restricted stock awards granted	$ 2,323	$ 1		2,322
Restricted stock awards granted (in shares)		3,115,000
Restricted stock awards forfeited (in shares)			1,302,000
Restricted stock units granted (in shares)		86,000
Stock surrendered for exercise of stock options (in shares)	66,115		66,000
Treasury stock purchased	$ (253)		$ (253)
Treasury stock purchased (in shares)	145,703		146,000
Stock issued in JP3 acquisition	$ 8,538	$ 1		8,537
Stock issued in JP3 acquisition (in shares)	11,500,000	11,500,000
Stock options granted	$ 722			722
Stock options exercised			$ (114)	114
Stock options exercised (in shares)	111,298	111,000
Ending balance at Dec. 31, 2020	$ 47,171	$ 8	$ (33,851)	$ 359,721	$ (19)	$ (278,688)
Ending balance (in shares) at Dec. 31, 2020		78,669,000	(5,581,000)