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			(9,417)		(9,417)
Common stock issued, net of issuance costs	$ 13	25,591			25,604
Common stock issued, net of issuance costs (in shares)	12,619,147
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		703			703
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	167,972
Minimum withholding taxes on net share settlements of equity awards		(32)			(32)
Balance at Sep. 30, 2022	$ 48	494,840	(351,574)		143,056
Balance, shares at Sep. 30, 2022	48,066,843
Treasury stock				(258)
Balance at Jun. 30, 2022	$ 47	493,445	(348,121)		145,113
Balance, shares at Jun. 30, 2022	47,218,863
Net loss			(3,453)		(3,453)
Common stock issued, net of issuance costs	$ 1	1,062			1,063
Common stock issued, net of issuance costs (in shares)	796,781
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		333			333
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes (in shares)	51,199
Balance at Sep. 30, 2022	$ 48	494,840	(351,574)		143,056
Balance, shares at Sep. 30, 2022	48,066,843
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			(9,538)		(9,538)
Common stock issued, net of issuance costs	$ 5	4,125			4,130
Common stock issued, net of issuance costs (in shares)	4,594,981
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		475			475
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 Sep. 30, 2023	$ 53	499,952	(362,816)		136,931
Balance, shares at Sep. 30, 2023	53,382,813
Treasury stock				(258)
Balance at Jun. 30, 2023	$ 52	498,449	(359,294)		138,949
Balance, shares at Jun. 30, 2023	51,945,902
Net loss			(3,522)		(3,522)
Common stock issued, net of issuance costs	$ 1	1,149			1,150
Common stock issued, net of issuance costs (in shares)	1,436,911
Stock compensation expense and related share issuances, net of shares withheld for the payment of taxes		354			354
Balance at Sep. 30, 2023	$ 53	$ 499,952	$ (362,816)		136,931
Balance, shares at Sep. 30, 2023	53,382,813
Treasury stock				$ (258)	$ (258)