Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash, including restricted cash of $0.2 million for both periods	$ 33,102	$ 16,697
Trade receivables, net of allowances of $37 and $189, respectively; Including receivables from Related Party of: $2.3 million and $0.9 million, respectively.	5,295	2,694
Inventories	12,676	11,683
Prepaid expenses and other assets	1,762	1,145
Total current assets	52,835	32,219
Leasehold improvements and equipment, net	3,084	3,206
Intangible assets, net	908	1,082
Right-of-use assets	3,049	1,226
Other long-term assets	576	625
Total assets	60,452	38,358
Current liabilities
Accounts payable	10,804	9,445
Accrued expenses	6,331	6,133
Current maturities of operating lease obligations	447	589
Current maturities of finance lease obligations	13	31
Customer deposits	175	278
Total current liabilities	17,770	16,476
Deferred revenue	4,346	4,441
Operating lease obligations, less current maturities	2,876	997
Finance lease obligations, less current maturities	11	20
Total liabilities	25,003	21,934
Commitments and Contingencies
Stockholders' Equity
Common stock, $0.001 par value; authorized 150,000 shares; 68,094 shares and 61,881 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively.	68	62
Additional paid-in capital	199,011	158,190
Accumulated deficit	(163,628)	(141,825)
Cumulative translation adjustments	(2)	(3)
Total stockholders' equity	35,449	16,424
Total liabilities and stockholders' equity	$ 60,452	$ 38,358