Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents, including restricted cash of $152 for both periods presented	$ 26,406	$ 20,441
Inventories	11,973	14,677
Prepaid expenses and other assets	1,885	2,967
Total current assets	46,382	46,567
Leasehold improvements and equipment, net	2,501	2,799
Intangible assets, net	591	671
Right-of-use assets, net	3,179	3,523
Other long-term assets	518	497
Total assets	53,171	54,057
Current liabilities
Accounts payable	10,031	9,679
Accrued expenses	8,079	7,337
Current maturities of operating lease obligations	775	680
Current maturities of finance lease obligations	10	16
Customer deposits	166	157
Total current liabilities	19,061	17,869
Deferred revenue	3,806	3,955
Operating lease obligations, less current maturities	3,137	3,539
Finance lease obligations, less current maturities	17	22
Total liabilities	26,021	25,385
Commitments and Contingencies (Note 10)
Stockholders' Equity
Common stock, $0.001 par value; authorized 150,000 shares; 74,856 shares and 74,567 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	75	74
Additional paid-in capital	216,691	214,094
Accumulated deficit	(189,615)	(185,493)
Cumulative translation adjustments	(1)	(3)
Total stockholders' equity	27,150	28,672
Total liabilities and stockholders' equity	53,171	54,057
Nonrelated Party
Current assets
Trade receivables, net of allowances of $826 and $122, respectively; Including receivables from Related Party of: $2.8 million and $3.1 million, respectively	$ 6,118	$ 8,482