CONDENSED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue
Product and service revenue	$ 10,321	$ 6,623	$ 16,944	$ 14,564
Lease	1,691	1,415	3,320	2,814
Total revenue	12,012	8,038	20,264	17,378
Cost of revenue (exclusive of amortization)
Total cost of revenue	5,251	3,146	9,183	7,794
Operating expenses
Selling, general and administrative expenses	7,854	7,569	14,609	13,847
Research and development expenses	1,499	3,834	3,149	8,622
Amortization of intangible assets	275	287	551	596
Operating loss	(2,867)	(6,798)	(7,228)	(13,481)
Other (expense) income
Change in fair value of warrant liabilities	(5,997)		(5,997)
Other income, net	111	39	200	48
Net loss	$ (8,753)	$ (6,759)	$ (13,025)	$ (13,433)
Net loss per common share:
Basic	$ (0.81)	$ (0.67)	$ (1.21)	$ (1.34)
Diluted	$ (0.81)	$ (0.67)	$ (1.21)	$ (1.34)
Weighted-average number of common shares used in calculation of net loss per share:
Basic	10,820	10,073	10,768	10,020
Diluted	10,820	10,073	10,768	10,020
Product
Revenue
Product and service revenue	$ 9,377	$ 5,733	$ 15,035	$ 12,702
Cost of revenue (exclusive of amortization)
Total cost of revenue	3,665	1,765	5,964	4,459
Service
Revenue
Product and service revenue	944	890	1,909	1,862
Cost of revenue (exclusive of amortization)
Total cost of revenue	1,090	897	2,229	2,377
Lease
Cost of revenue (exclusive of amortization)
Total cost of revenue	$ 496	$ 484	$ 990	$ 958