CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net loss	$ (3,163)	$ (20,724)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	259	1,818
Bad debt (recovery) expense	(55)	114
Non-cash lease expense from right-of-use asset	101	290
Stock-based compensation	473	114
Forfeiture of unvested stock options	0	(84)
Casualty loss (gain), net of insurance proceeds	0	533
Impairment charges - property and equipment	2	37
Impairment charges - intangible assets	0	5,132
Impairment charges - right of use asset	0	179
Impairment charges - goodwill	0	7,367
Changes in operating assets and liabilities:
Accounts receivable	313	378
Inventory	399	261
Prepaid expenses and other current assets	319	213
Other assets	24	56
Accounts payable	(78)	142
Accrued expenses and other current liabilities	(335)	129
Deferred revenue	(354)	(441)
Lease liabilities	(193)	(390)
Net cash used in operating activities	(2,288)	(4,876)
Cash flows from investing activities:
Purchases of property and equipment	0	(11)
Proceeds from sale of equipment	0	30
Net cash provided by investing activities	0	19
Cash flows from financing activities:
Proceeds from private placement, net of issuance costs	5,435	0
Net proceeds from exercise of common stock warrants	534	0
Net cash provided by financing activities	5,969	0
Increase (decrease) in cash	3,681	(4,857)
Cash at beginning of period	3,085	9,000
Cash at end of period	6,766	4,143
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	18	7
Cash paid for income taxes	31	0
Non-cash investing and financing activities:
Preferred stock dividends	282	0
Warrant modification	25	0
Common stock issued for conversion of Preferred Stock and accrued dividends	47	0
Induced exercise of common stock warrants	751	0
Induced exercise of common stock warrants	$ 0	$ 11