CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Total
Balance at Dec. 31, 2020	$ 19	$ 383,723	$ (326,013)	$ (258)	$ 57,471
Balance, shares at Dec. 31, 2020	19,172,020
Net loss			(8,870)		(8,870)
Common stock issued, net of issuance costs	$ 14	77,849			77,863
Common stock issued, net of issuance costs (in shares)	14,307,270
Stock compensation expense and related share issuances, net of shares withheld for payment of taxes		295			295
Stock compensation expense and related share issuances, net of shares withheld for payment of taxes (in shares)	57,186
Minimum withholding taxes on net share settlements of equity awards		(150)			(150)
Balance at Jun. 30, 2021	$ 33	461,717	(334,883)	(258)	126,609
Balance, shares at Jun. 30, 2021	33,536,476
Balance at Mar. 31, 2021	$ 32	455,854	(331,403)	(258)	124,225
Balance, shares at Mar. 31, 2021	32,336,476
Net loss			(3,480)		(3,480)
Common stock issued, net of issuance costs	$ 1	5,659			5,660
Common stock issued, net of issuance costs (in shares)	1,200,000
Stock compensation expense and related share issuances, net of shares withheld for payment of taxes		204			204
Balance at Jun. 30, 2021	$ 33	461,717	(334,883)	(258)	126,609
Balance, shares at Jun. 30, 2021	33,536,476
Balance at Dec. 31, 2021	$ 35	468,578	(342,157)	(258)	126,198
Balance, shares at Dec. 31, 2021	35,279,724
Net loss			(5,964)		(5,964)
Common stock issued, net of issuance costs	$ 12	24,529			24,541
Common stock issued, net of issuance costs (in shares)	11,822,366
Stock compensation expense and related share issuances, net of shares withheld for payment of taxes		370			370
Stock compensation expense and related share issuances, net of shares withheld for payment of taxes (in shares)	116,773
Minimum withholding taxes on net share settlements of equity awards		(32)			(32)
Balance at Jun. 30, 2022	$ 47	493,445	(348,121)	(258)	145,113
Balance, shares at Jun. 30, 2022	47,218,863
Balance at Mar. 31, 2022	$ 43	484,160	(344,966)	(258)	138,979
Balance, shares at Mar. 31, 2022	42,817,584
Net loss			(3,155)		(3,155)
Common stock issued, net of issuance costs	$ 4	8,981			8,985
Common stock issued, net of issuance costs (in shares)	4,376,279
Stock compensation expense and related share issuances, net of shares withheld for payment of taxes		304			304
Stock compensation expense and related share issuances, net of shares withheld for payment of taxes (in shares)	25,000
Balance at Jun. 30, 2022	$ 47	$ 493,445	$ (348,121)	$ (258)	$ 145,113
Balance, shares at Jun. 30, 2022	47,218,863