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	$ (3,368)	$ (2,835)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,249	1,397
Amortization of operating lease right-of-use assets	95	105
Amortization of deferred financing costs and debt discount	31	41
Change in allowance for credit losses	84	(95)
Stock-based compensation expense	112	325
Loss on disposal of property and equipment	13	0
Inventory write-off	141	0
Changes in operating assets and liabilities:
Accounts receivable	726	626
Inventories	(154)	283
Prepaid expenses and other assets	(31)	16
Accounts payable	261	(326)
Accrued expenses and other liabilities	(57)	(12)
Deferred revenues	194	(247)
Operating lease liabilities	(100)	(95)
Net cash used in operating activities	(804)	(817)
Cash flows from investing activities:
Purchase of property and equipment	(725)	(1,792)
Net cash used in investing activities	(725)	(1,792)
Cash flows from financing activities:
Payment of contingent consideration	(18)	0
Net cash used in financing activities	(18)	0
Net decrease in cash, cash equivalents and restricted cash	(1,547)	(2,609)
Cash, cash equivalents and restricted cash at beginning of period	8,118	6,795
Cash, cash equivalents and restricted cash at end of period	6,571	4,186
Cash and cash equivalents	5,237	2,825
Restricted cash	1,334	1,361
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	480	241
Supplemental schedule of non-cash operating, investing and financing activities:
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	977	0
Transfer of property and equipment to inventories	9	45
Accrued payment of contingent consideration	$ 6	$ 14