CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Paid-In Capital	Accumulated Deficit	Treasury Stock	Total
Treasury stock				$ (258)
Balance at Dec. 31, 2021	$ 35	$ 468,578	$ (342,157)		$ 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 the payment of taxes		370			370
Stock compensation expense and related share issuances, net of shares withheld for the 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)		145,113
Balance, shares at Jun. 30, 2022	47,218,863
Treasury stock				(258)
Balance at Mar. 31, 2022	$ 43	484,160	(344,966)		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 the payment of taxes		304			304
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	25,000
Balance at Jun. 30, 2022	$ 47	493,445	(348,121)		145,113
Balance, shares at Jun. 30, 2022	47,218,863
Treasury stock				(258)
Treasury stock				(258)	(258)
Balance at Dec. 31, 2022	$ 48	495,456	(353,278)		141,968
Balance, shares at Dec. 31, 2022	48,405,543
Net loss			(6,016)		(6,016)
Common stock issued, net of issuance costs	$ 4	2,976			2,980
Common stock issued, net of issuance costs (in shares)	3,158,070
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		121			121
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	382,289
Minimum withholding taxes on net share settlements of equity awards		(104)			(104)
Balance at Jun. 30, 2023	$ 52	498,449	(359,294)		138,949
Balance, shares at Jun. 30, 2023	51,945,902
Treasury stock				(258)
Balance at Mar. 31, 2023	$ 50	496,738	(355,668)		140,862
Balance, shares at Mar. 31, 2023	49,999,920
Net loss			(3,626)		(3,626)
Common stock issued, net of issuance costs	$ 2	1,497			1,499
Common stock issued, net of issuance costs (in shares)	1,703,569
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		265			265
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	242,413
Minimum withholding taxes on net share settlements of equity awards		(51)			(51)
Balance at Jun. 30, 2023	$ 52	$ 498,449	$ (359,294)		138,949
Balance, shares at Jun. 30, 2023	51,945,902
Treasury stock				$ (258)	$ (258)