Schedule of Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued salaries, bonus, and benefits	$ 1,213	$ 1,516
Accrued licenses and maintenance fees	484	484
Accrued warranties	209	242
Accrued taxes	165	177
Accrued investigational sites	102	123
Accrued lease deposit payable	5	124
Other	150	81
Total accrued liabilities	2,328	2,747
Less: Long term accrued liabilities	(202)	(219)
Total current accrued liabilities	$ 2,126	$ 2,528