CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net loss	$ (2,268)	$ (13,572)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	173	1,226
Bad debt (recovery) expense	(32)	125
Non-cash lease expense from right-of-use asset	77	235
Stock-based compensation	442	83
Forfeiture of unvested stock options	0	(84)
Casualty loss, net of insurance proceeds	(400)	533
Impairment charges - property and equipment	2	0
Impairment charges - right of use asset	0	179
Impairment charges - goodwill	0	7,367
Changes in operating assets and liabilities:
Accounts receivable	203	233
Inventory	321	210
Prepaid expenses and other current assets	213	(69)
Other assets	18	87
Accounts payable	(48)	66
Accrued expenses and other current liabilities	(456)	17
Deferred revenue	(259)	(265)
Lease liabilities	(168)	(282)
Net cash used in operating activities	(2,182)	(3,911)
Cash flows from investing activities:
Purchases of property and equipment	0	(11)
Proceeds from sale of equipment	0	29
Net cash provided by investing activities	0	18
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	3,787	(3,893)
Cash at beginning of period	3,085	9,000
Cash at end of period	6,872	5,107
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	9	6
Cash paid for income taxes	31	0
Non-cash investing and financing activities:
Preferred stock dividends	149	0
Warrant Modification	25	0
Common stock issued for conversion of Preferred Stock	4	0
Induced exercise of common stock warrants	$ 751	$ 0