Net Loss Per Share - Computation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net loss	$ (1,049)	$ (1,219)	$ (9,033)	$ (4,539)	$ (2,268)	$ (13,572)
Less: deemed dividend	(149)		0		(149)	0
Less: Induced conversion on warrants	(751)		0		(751)	0
Warrant Modification	0		0		(25)	0
Net loss attributable to common stockholders	$ (1,949)		$ (9,033)		$ (3,193)	$ (13,572)
Denominator:
Weighted-average number of shares of common stock - basic (in shares)	2,487		2,065		2,277	2,065
Weighted-average number of shares of common stock - diluted (in shares)	2,487		2,065		2,277	2,065
Basic net loss per share (in dollars per share)	$ (0.78)		$ (4.37)		$ (1.40)	$ (6.57)
Diluted net loss per share (in dollars per share)	$ (0.78)		$ (4.37)		$ (1.40)	$ (6.57)