Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 5,237	$ 6,784
Restricted cash	1,334	1,334
Accounts receivable, net of allowance for credit losses of $306 and $222 at March 31, 2024 and December 31, 2023, respectively	3,630	4,440
Inventories	2,695	2,673
Prepaid expenses and other current assets	343	312
Total current assets	13,239	15,543
Property and equipment, net	11,726	11,778
Operating lease right-of-use assets	1,508	626
Intangible assets, net	6,825	7,319
Goodwill	6,519	6,519
Other assets	231	231
Total assets	40,048	42,016
Current liabilities:
Accounts payable	3,592	3,343
Accrued expenses and other current liabilities	6,269	6,306
Deferred revenues	2,366	2,120
Current portion of operating lease liabilities	300	352
Current portion of contingent consideration	61	53
Total current liabilities	12,588	12,174
Long-term debt, net	15,075	15,044
Deferred revenues and other liabilities	480	552
Deferred tax liability	186	186
Operating lease liabilities, net of current portion	1,166	237
Contingent consideration, net of current portion	1,121	1,135
Total liabilities	30,616	29,328
Commitments and contingencies (Note 13)
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; 35,060,920 shares issued and outstanding at March 31, 2024 and December 31, 2023	35	35
Additional paid-in capital	250,823	250,711
Accumulated deficit	(241,426)	(238,058)
Total stockholders' equity	9,432	12,688
Total liabilities and stockholders' equity	$ 40,048	$ 42,016