Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flow from operating activities:
Net loss	$ (1,222)	$ (3,778)
Adjustments to reconcile net loss to net cash used for operating activities:
Amortization	12	46
Depreciation	91	78
Non-cash lease expense	60	161
Bad debt provision	21	0
Stock-based compensation	265	586
Deferred tax	4	5
Changes in operating assets and liabilities:
Accounts receivable	(144)	1,517
Inventory	167	523
Prepaid and other assets	(246)	363
Accounts payable	(77)	(120)
Accrued and other expenses	(693)	(468)
Lease liabilities	(60)	(177)
Deferred revenue	642	(264)
Total adjustments	42	2,250
Net cash used for operating activities	(1,180)	(1,528)
Cash flow from investing activities:
Additions to patents, technology and other	0	0
Additions to property and equipment	(106)	(122)
Capitalization of internal-use software development costs	(100)	0
Net cash used for investing activities	(206)	(122)
Decrease in cash and cash equivalents	(1,386)	(1,650)
Cash and cash equivalents, beginning of period	21,670	21,313
Cash and cash equivalents, end of period	20,284	19,663
Supplemental disclosure of cash flow information:
Interest paid	0	0
Right-of-use asset obtained in exchange for operating lease liability	$ 121	$ 0