Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents, including restricted cash of $0.2 million for both periods presented	$ 28,219	$ 16,697
Trade receivables, net of allowances of $65 and $189, respectively; Including receivables from Related Party of $2.1 million and $0.9 million, respectively.	5,226	2,694
Inventories	13,601	11,683
Prepaid expenses and other assets	1,859	1,145
Total current assets	48,905	32,219
Leasehold improvements and equipment, net	3,003	3,206
Intangible assets, net	857	1,082
Right-of-use assets	4,352	1,226
Other long-term assets	723	625
Total assets	57,840	38,358
Current liabilities
Accounts payable	10,423	9,445
Accrued expenses	6,481	6,133
Current maturities of operating lease obligations	528	589
Current maturities of finance lease obligations	20	31
Customer deposits	161	278
Total current liabilities	17,613	16,476
Deferred revenue	4,346	4,441
Operating lease obligations, less current maturities	4,154	997
Finance lease obligations, less current maturities	0	20
Total liabilities	26,113	21,934
Commitments and Contingencies
Stockholders' Equity
Common stock, $0.001 par value; authorized 150,000 shares; 68,126 shares and 61,881 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively.	68	62
Additional paid-in capital	200,614	158,190
Accumulated deficit	(168,953)	(141,825)
Cumulative translation adjustments	(2)	(3)
Total stockholders' equity	31,727	16,424
Total liabilities and stockholders' equity	$ 57,840	$ 38,358