Unaudited 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	$ (4,093)	$ (14,137)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation of leasehold improvements and equipment	460	413
Amortization of intangibles	80	99
Amortization of right of use assets	344	468
Share-based compensation expense	2,597	3,184
Loss on disposal of leasehold improvements and equipment	(5)	22
Provision for doubtful trade receivables	751	5
Non-cash financing costs	42	34
Changes in operating assets and liabilities:
Trade receivables	1,584	976
Inventories	2,704	(2,152)
Implementation costs for cloud computing arrangement	(60)	(204)
Prepaid expenses and other assets	1,019	529
Accounts payable	352	(226)
Accrued expenses	742	215
Deferred revenue	(149)	(118)
Customer deposits and other	11	16
Operating lease liabilities	(307)	(154)
Net cash provided by (used in) operating activities	6,072	(11,030)
Cash Flows From Investing Activities
Purchases of leasehold improvements and equipment	(101)	(110)
Proceeds from the sale of leasehold improvements and equipment, net	5	0
Net cash used in investing activities	(96)	(110)
Cash Flows From Financing Activities
Principal payments on finance leases	(11)	(7)
Net cash used in financing activities	(11)	(7)
Net increase (decrease) in cash and cash equivalents	5,965	(11,147)
Cash and cash equivalents, including restricted cash of $152 for both periods - beginning of period	20,441	28,219
Cash and cash equivalents, including restricted cash of $152 for both periods - end of period	26,406	17,072
Supplemental Disclosures of Cash Flow Information
Cash payments for principal on operating lease liabilities	342	204
Supplemental Schedule of Noncash Operating Activity
Stockholders' equity attributable to parent	$ (27,150)	$ (20,778)