Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current Assets
Cash, including restricted cash of $0.2 million and $0.2 million, respectively	$ 18,812	$ 22,616
Trade receivables, net of allowances of $2.8 million and $0.5 million, respectively; receivables from related party: $0.8 million and $0.7 million, respectively	2,175	4,359
Contract assets	0	56
Receivable held at escrow, net of allowance of $0.1 million	0	677
Inventories	11,535	8,249
Prepaid expenses and other assets	996	577
Total current assets	33,518	36,534
Leasehold improvements and equipment, net	3,765	3,585
Intangible assets, net	1,311	1,547
Right of use assets	891	0
Other long-term assets	762	566
Total assets	40,247	42,232
Current Liabilities
Accounts payable	9,626	9,548
Accrued expenses	4,415	4,444
Current maturities of operating lease obligations	595	0
Current maturities of finance lease obligations	258	173
Contract liabilities and customer deposits	169	275
Total current liabilities	15,063	14,440
Deferred revenue	3,873	0
Operating lease obligations, less current maturities	848	0
Finance lease obligations, less current maturities	18	137
Deferred rent	0	477
Total liabilities	19,802	15,054
Commitments and contingencies
Stockholders' Equity
Common stock, $.001 par value; authorized 150,000 shares; issued and outstanding December 31, 2019 59,562 shares and December 31, 2018 55,089 shares	60	55
Additional paid-in capital	142,285	116,876
Accumulated deficit	(121,900)	(89,753)
Total stockholders' equity	20,445	27,178
Total liabilities and stockholders' equity	$ 40,247	$ 42,232