Basis of Presentation and Summary of Significant Accounting Policies - Basis of presentation (Details) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2023 USD ($) $ / shares	Mar. 31, 2023 USD ($)	Jun. 30, 2022 USD ($) $ / shares	Mar. 31, 2022 USD ($)	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2022 USD ($) $ / shares	Dec. 31, 2022 USD ($)	Nov. 16, 2022 USD ($)	Sep. 30, 2022 USD ($)	Aug. 23, 2022 creditFacility $ / shares	Dec. 31, 2021 USD ($)
Accounting Policies [Abstract]
Net Income (Loss) | $	$ (1,167)	$ (1,333)	$ (2,486)	$ (2,821)	$ (2,500)	$ (5,307)	$ (10,300)
Cash used in operating activities | $	$ (152)		$ (2,642)		$ (1,335)	$ (5,345)	(6,700)
Common stock, minimum bid price (USD per share) | $ / shares	$ 1.00				$ 1.00
Common stock, trade price (USD per share) | $ / shares			$ 1.00			$ 1.00
Common stock, closing bid price (USD per share) | $ / shares										$ 1.00
Number of consecutive days for bid | creditFacility										30
Stockholders' equity | $	$ 3,099	$ 2,955	$ 4,171	$ 3,432	$ 3,099	$ 4,171	$ (477)	$ 2,500	$ 1,500		$ 6,209