Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net loss	$ (4,921,000)	$ (3,467,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,438,000	2,499,000
Amortization of operating lease right-of-use assets	172,000	174,000
Amortization of deferred financing costs and debt discount	78,000	70,000
Provision for credit losses	166,000	30,000
Stock-based compensation expense	257,000	275,000
Loss on disposal of property and equipment	63,000	19,000
Inventory write-off	0	141,000
Changes in operating assets and liabilities:
Accounts receivable	1,065,000	431,000
Inventories	(912,000)	6,000
Prepaid expenses and other assets	(49,000)	(119,000)
Accounts payable	465,000	(466,000)
Accrued expenses and other liabilities	(1,201,000)	290,000
Deferred revenues	52,000	74,000
Operating lease liabilities	(164,000)	(170,000)
Net cash used in operating activities	(2,491,000)	(213,000)
Cash flows from investing activities:
Purchase of property and equipment	(138,000)	(1,070,000)
Net cash used in investing activities	(138,000)	(1,070,000)
Cash flows from financing activities:
Payment of contingent consideration	0	(18,000)
Net cash used in financing activities	0	(18,000)
Net decrease in cash, cash equivalents and restricted cash	(2,629,000)	(1,301,000)
Cash, cash equivalents and restricted cash at beginning of period	8,595,000	8,118,000
Cash and cash equivalents	5,966,000	5,483,000
Restricted cash	0	1,334,000
Cash, cash equivalents and restricted cash at end of period	5,966,000	6,817,000
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	907,000	990,000
Supplemental schedule of non-cash operating, investing and financing activities:
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	0	977,000
Transfer of property and equipment to inventories	78,000	166,000
Accrued payment of contingent consideration	$ 47,000	$ 9,000