CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss	$ (1,219)	$ (4,539)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	86	627
Bad debt (recovery) expense	(24)	111
Non-cash lease expense from right-of-use asset	43	127
Stock-based compensation	31	52
Forfeiture of unvested stock options	0	(84)
Impairment charges - goodwill	0	1,138
Changes in operating assets and liabilities:
Accounts receivable	47	183
Inventory	89	103
Prepaid expenses and other current assets	(298)	(360)
Other assets	9	45
Accounts payable	23	294
Accrued expenses and other current liabilities	591	188
Deferred revenue	(125)	(126)
Lease liabilities	(97)	(163)
Net cash used in operating activities	(844)	(2,404)
Cash flows from investing activities:
Purchases of property and equipment	0	(11)
Proceeds from sale of equipment	0	1
Net cash used in investing activities	0	(10)
Cash flows from financing activities:
Proceeds from private placement, net of issuance costs and amounts in escrow	1,473	0
Net cash provided by financing activities	1,473	0
Increase (decrease) in cash and restricted cash	629	(2,414)
Cash and restricted cash at beginning of period	3,085	9,000
Cash and restricted cash at end of period	3,714	6,586
Reconciliation of cash and restricted cash
Cash	3,714	6,525
Restricted cash	0	61
Total cash and restricted cash	3,714	6,586
Cash paid during the period for interest	2	0
Cash paid for income taxes	31	0
Non-cash investing and financing activities:
Warrant Modification	$ 25	$ 0