Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net loss	$ (2,432)	$ (3,368)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,220	1,249
Amortization of operating lease right-of-use assets	85	95
Amortization of deferred financing costs and debt discount	39	31
Provision for credit losses	110	84
Stock-based compensation expense	129	112
Loss on disposal of property and equipment	34	13
Inventory write-off	0	141
Changes in operating assets and liabilities:
Accounts receivable	136	726
Inventories	(377)	(154)
Prepaid expenses and other assets	137	(31)
Accounts payable	362	261
Accrued expenses and other liabilities	169	(57)
Deferred revenues	(81)	194
Operating lease liabilities	(81)	(100)
Net cash used in operating activities	(550)	(804)
Cash flows from investing activities:
Purchase of property and equipment	(199)	(725)
Net cash used in investing activities	(199)	(725)
Cash flows from financing activities:
Payment of contingent consideration	0	(18)
Net cash used in financing activities	0	(18)
Net decrease in cash, cash equivalents and restricted cash	(749)	(1,547)
Cash, cash equivalents and restricted cash at beginning of period	8,595	8,118
Cash, cash equivalents and restricted cash at end of period	7,846	6,571
Cash and cash equivalents	6,512	5,237
Restricted cash	1,334	1,334
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	450	480
Supplemental schedule of non-cash operating, investing and financing activities:
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	0	977
Transfer of property and equipment to inventories	36	9
Accrued payment of contingent consideration	$ 21	$ 6