Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents, including restricted cash of $152 for both periods presented	$ 23,141	$ 20,441
Trade receivables, net of allowances of $499 and $122, respectively; Including receivables from Related Party of: $3.5 million and $3.1 million, respectively	9,221	8,482
Inventories	11,908	14,677
Prepaid expenses and other assets	2,295	2,967
Total current assets	46,565	46,567
Leasehold improvements and equipment, net	2,689	2,799
Intangible assets, net	630	671
Right-of-use assets, net	3,352	3,523
Other long-term assets	532	497
Total assets	53,768	54,057
Current liabilities
Accounts payable	8,951	9,679
Accrued expenses	8,610	7,337
Current maturities of operating lease obligations	697	680
Current maturities of finance lease obligations	17	16
Customer deposits	148	157
Total current liabilities	18,423	17,869
Deferred revenue	3,955	3,955
Operating lease obligations, less current maturities	3,353	3,539
Finance lease obligations, less current maturities	20	22
Total liabilities	25,751	25,385
Commitments and Contingencies (Note 10)
Stockholders' Equity
Common stock, $0.001 par value; authorized 150,000 shares; 74,666 shares and 74,567 shares issued and outstanding at March 31, 2023 and December 31, 2022, respectively	74	74
Additional paid-in capital	215,367	214,094
Accumulated deficit	(187,424)	(185,493)
Cumulative translation adjustments	0	(3)
Total stockholders' equity	28,017	28,672
Total liabilities and stockholders' equity	$ 53,768	$ 54,057