CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash	$ 8,939	$ 5,058
Current portion of restricted cash	61	158
Accounts receivable, net	849	3,166
Inventory	1,821	920
Prepaid expenses and other current assets	1,081	691
Total current assets	12,751	9,993
Property and equipment, net	159	573
Goodwill	7,367	7,367
Intangibles, net	7,562	10,140
Operating lease, right-of-use assets	659	903
Other assets	109	167
Total assets	28,607	29,143
Current liabilities:
Current portion of long-term debt, net of debt discount	0	2,014
Accounts payable	259	313
Accrued expenses and other current liabilities	959	1,201
Current portion deferred revenue	783	1,217
Operating lease liabilities, current	492	830
Total current liabilities	2,493	5,575
Long-term liabilities:
Long-term debt, net of current portion and net of debt discount	0	403
Operating lease liabilities, net of current portion	236	602
Deferred revenue, net of current portion	381	506
Total long-term liabilities	617	1,511
Total liabilities	3,110	7,086
Commitments and contingencies (see Note 15)
Stockholders’ equity:
Common stock, $.0001 par value; 150,000,000 shares authorized; 30,929,331 shares issued and 30,816,048 outstanding at December 31, 2021 and 7,861,912 shares issued and 7,748,629 outstanding at December 31, 2020	3	1
Treasury stock, 113,283 shares at December 31, 2021 and 2020	(181)	(181)
Additional paid-in capital	227,581	215,092
Accumulated deficit	(201,906)	(192,855)
Total stockholders’ equity	25,497	22,057
Total liabilities and stockholders’ equity	28,607	29,143
Series A-2 Preferred Stock
Stockholders’ equity:
Preferred stock	0	0
Series D Preferred Stock
Stockholders’ equity:
Preferred stock	0	0
Series E Preferred Stock
Stockholders’ equity:
Preferred stock	$ 0	$ 0