UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($) shares in Thousands, $ in Thousands		Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance at Dec. 31, 2019		$ 172,029	$ 6	$ (33,484)	$ 347,565	$ 179	$ (142,237)
Beginning balance (in shares) at Dec. 31, 2019			63,657	4,145
Increase (Decrease) in Equity
Net income (loss)		(118,771)					(118,771)
Foreign currency translation adjustment		(168)				(168)
Stock issued under employee stock purchase plan		78			78
Stock issued under employee stock purchase plan (in shares)				(50)
Restricted stock granted		338			338
Restricted stock granted (in shares)			2,815
Restricted stock forfeited (in shares)				(457)
Treasury stock purchased		(123)		$ (123)
Treasury stock purchased (in shares)				97
Stock compensation expense		2,208			2,208
Stock issued in JP3 acquisition		8,538	$ 1		8,537
Stock issued in JP3 acquisition (shares)			11,500
Ending balance at Sep. 30, 2020		64,129	$ 7	$ (33,607)	358,726	11	(261,008)
Ending balance (in shares) at Sep. 30, 2020			77,972	4,649
Beginning balance at Jun. 30, 2020		108,706	$ 7	$ (33,566)	357,981	51	(215,767)
Beginning balance (in shares) at Jun. 30, 2020			77,626	4,459
Increase (Decrease) in Equity
Net income (loss)		(45,241)					(45,241)
Foreign currency translation adjustment		(40)				(40)
Stock issued under employee stock purchase plan		58			58
Stock issued under employee stock purchase plan (in shares)				(25)
Restricted stock granted (in shares)			346
Restricted stock forfeited (in shares)				(179)
Treasury stock purchased		(41)		$ (41)
Treasury stock purchased (in shares)				36
Stock compensation expense		687			687
Ending balance at Sep. 30, 2020		64,129	$ 7	$ (33,607)	358,726	11	(261,008)
Ending balance (in shares) at Sep. 30, 2020			77,972	4,649
Beginning balance at Dec. 31, 2020		47,171	$ 8	$ (33,851)	359,721	(19)	(278,688)
Beginning balance (in shares) at Dec. 31, 2020			78,669	5,581
Increase (Decrease) in Equity
Net income (loss)		(14,337)
Foreign currency translation adjustment		70				70
Stock issued under employee stock purchase plan		(246)		$ (110)	(136)
Stock issued under employee stock purchase plan (in shares)				(112)
Restricted stock granted (in shares)			1,694
Restricted stock forfeited		76		$ 72	4
Restricted stock forfeited (in shares)			(140)	(34)
Stock compensation expense		2,710			2,710
Shares withheld to cover taxes		(161)		$ (36)	(125)
Shares withheld to cover taxes (in shares)				146
Other (shares)	[1]		(613)
Stock issued in JP3 acquisition		0
Ending balance at Sep. 30, 2021		35,283	$ 8	$ (33,925)	362,174	51	(293,025)
Ending balance (in shares) at Sep. 30, 2021			79,610	5,649
Beginning balance at Jun. 30, 2021		33,894	$ 8	$ (34,017)	361,424	13	(293,534)
Beginning balance (in shares) at Jun. 30, 2021			79,607	5,628
Increase (Decrease) in Equity
Net income (loss)		509					509
Foreign currency translation adjustment		38				38
Stock issued under employee stock purchase plan		(69)		$ 20	(89)
Stock issued under employee stock purchase plan (in shares)				(28)
Restricted stock granted (in shares)			9
Restricted stock forfeited		11		$ 8	3
Restricted stock forfeited (in shares)			(6)	(4)
Stock compensation expense		961			961
Shares withheld to cover taxes		(61)		$ 64	(125)
Shares withheld to cover taxes (in shares)				45
Ending balance at Sep. 30, 2021		$ 35,283	$ 8	$ (33,925)	$ 362,174	$ 51	$ (293,025)
Ending balance (in shares) at Sep. 30, 2021			79,610	5,649

[1] See Note 12, “Stockholders’ Equity” for further discussion.