CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (2,079)	$ (3,030)
Adjustments to reconcile net loss to net cash flows used in operating activities:
Depreciation and amortization	304	310
Amortization of operating lease right-of-use asset	56	49
Amortization of finance lease right-of-use asset	18	23
Stock-based compensation	357	450
Provision for credit losses	83	12
Changes in operating assets and liabilities:
Accounts receivable	312	166
Inventories	(148)	162
Other assets	126	84
Accounts payable	283	141
Operating lease liabilities	(57)	(48)
Deferred revenue	83	5
Accrued expenses	(5)	101
Net cash used in operating activities	(667)	(1,575)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment		(22)
Net cash used in investing activities		(22)
CASH FLOWS FROM FINANCING ACTIVITIES:
Principal payments on finance lease obligations	(17)	(25)
Issuance of common stock, net of issuance costs	67	438
Principal payments on long-term debt	(109)	(120)
Net cash flows provided by (used in) financing activities	(59)	293
NET CHANGE IN CASH	(726)	(1,304)
CASH AT BEGINNING OF PERIOD	1,502	3,445
CASH AT END OF PERIOD	776	2,141
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid during the period for interest	$ 9	10
SUPPLEMENTAL DISCLOSURE OF CONSULTING SERVICES OR ANY OTHER NON-CASH COMMON STOCK RELATED ACTIVITY
Purchases of equipment financed through accounts payable		$ 7