CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue, net of contractual allowances and adjustments	$ 3,478	$ 2,829
Adjustment for allowance for doubtful accounts	(46)	(12)
Net sales	3,432	2,817
Total cost of sales	2,512	2,068
Gross profit	920	749
OPERATING EXPENSES:
Operating expenses	2,994	3,775
OPERATING LOSS	(2,074)	(3,026)
OTHER (EXPENSE) INCOME:
Interest expense, net	(5)	(4)
LOSS BEFORE INCOME TAXES	(2,079)	(3,030)
NET LOSS	$ (2,079)	$ (3,030)
LOSS PER COMMON SHARE, BASIC	$ (1.46)	$ (2.61)
LOSS PER COMMON SHARE, DILUTED	$ (1.46)	$ (2.61)
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING, BASIC	1,425,942	1,160,592
WEIGHTED-AVERAGE SHARES OF COMMON STOCK OUTSTANDING, DILUTED	1,425,942	1,160,592
Service revenue, net
Revenue, net of contractual allowances and adjustments	$ 2,821	$ 2,068
Adjustment for allowance for doubtful accounts	(46)	(12)
Net sales	2,775	2,056
Total cost of sales	2,101	1,769
Other revenue
Revenue, net of contractual allowances and adjustments	657	761
Net sales	657	761
Total cost of sales	$ 411	$ 299