Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 5,434	$ 12,586
Restricted cash	1,361	0
Accounts receivable, net of allowance for doubtful accounts of $382 and $275 at December 31, 2022 and 2021, respectively	4,471	3,433
Inventories	5,547	3,489
Prepaid expenses and other current assets	691	462
Total current assets	17,504	19,970
Property and equipment, net	7,498	6,883
Operating lease right-of-use assets	975	638
Intangible assets, net	17,394	10,083
Goodwill	8,803	8,803
Other assets	98	216
Total assets	52,272	46,593
Current liabilities:
Accounts payable	3,425	2,822
Accrued expenses and other current liabilities	6,555	6,377
Deferred revenues	2,778	3,285
Current portion of operating lease liabilities	355	318
Current portion of contingent consideration	313	0
Total current liabilities	13,426	12,802
Long-term debt, net	7,476	7,319
Deferred revenues and other liabilities	314	400
Deferred tax liability	306	266
Operating lease liabilities, net of current portion	610	392
Contingent consideration, net of current portion	8,309	0
Total liabilities	30,441	21,179
Commitments and contingencies (Note 12)
Stockholders' equity:
Series C convertible preferred stock, $0.10 par value; 10,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.001 par value; 150,000,000 shares authorized; 34,723,046 and 34,364,679 shares issued and outstanding at December 31, 2022 and 2021, respectively	35	34
Additional paid-in capital	249,024	247,059
Accumulated deficit	(227,228)	(221,679)
Total stockholders' equity	21,831	25,414
Total liabilities and stockholders' equity	$ 52,272	$ 46,593