Leases (Details) - Schedule of supplemental balance sheet information - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022
Schedule of supplemental balance sheet information (Abstract)
Operating lease right-of-use assets		$ 103	$ 118
Current portion of operating lease obligations		85	83
Operating lease liabilities, net of current portion		18	35
Total operating lease liabilities		103	118
Property and equipment, at cost		2,640	2,622
Accumulated depreciation		(2,421)	(2,418)
Property and equipment, net		219	204
Current portion of finance lease obligations		73	95
Finance lease liabilities, net of current portion		41	46
Total finance lease liabilities		$ 114	$ 141
Operating leases		1 year 6 months		1 year 6 months
Finance leases		1 year 4 months 24 days		2 years
Operating leases	[1]	5.00%		5.00%
Finance leases		2.00%		2.00%

[1] Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2019