CONDENSED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue
Product and service revenue	$ 6,623	$ 7,941
Lease	1,629	1,399
Total revenue	8,252	9,340
Cost of revenue (exclusive of amortization)
Total cost of revenue	3,932	4,648
Operating expenses
Selling, general and administrative expenses	6,755	6,278
Research and development expenses	1,650	4,788
Amortization of intangible assets	276	309
Operating loss	(4,361)	(6,683)
Other income
Other income, net	89	9
Net loss	$ (4,272)	$ (6,674)
Net loss per share:
Basic	$ (0.40)	$ (0.67)
Diluted	$ (0.40)	$ (0.67)
Weighted-average number of shares used in calculation of net loss per share:
Basic	10,716	9,967
Diluted	10,716	9,967
Product
Revenue
Product and service revenue	$ 5,658	$ 6,969
Cost of revenue (exclusive of amortization)
Total cost of revenue	2,299	2,694
Service
Revenue
Product and service revenue	965	972
Cost of revenue (exclusive of amortization)
Total cost of revenue	1,139	1,480
Lease
Cost of revenue (exclusive of amortization)
Total cost of revenue	$ 494	$ 474