Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 16,848	$ 18,243
Restricted cash	123	144
Trade accounts receivable, net of allowance for credit losses and doubtful accounts of $570 and $552, respectively	7,545	7,154
Inventories	17,300	17,945
Prepaid and other current assets	944	844
Total current assets	42,760	44,330
Property and equipment, net	5,409	5,212
Right-of-use asset, net	1,146	1,258
Other assets	264	287
Intangible assets, net	386	400
Goodwill	3,205	3,205
Total Assets	53,170	54,692
Current Liabilities:
Accounts payable	2,774	2,615
Accrued liabilities	4,345	4,349
Current portion of lease liability	471	462
Current portion of finance lease obligations	31	31
Line of credit	3,607	3,620
Total current liabilities	11,228	11,077
Long-term Liabilities:
Lease liability, net	720	842
Finance lease obligation, net	95	103
Long-term debt, plus premium and less issuance cost	11,844	11,787
Total Liabilities	23,887	23,809
Commitments and Contingencies (note 11)
Stockholders’ Equity:
Preferred stock, $0.000001 par value; 10,000,000 shares authorized; no shares issued and outstanding
Common stock, $0.000001 par value; 300,000,000 shares authorized; 87,313,701 shares issued and outstanding as of March 31, 2022 and 87,068,980 shares issued and outstanding as of December 31, 2021
Additional paid-in capital	266,681	266,068
Accumulated deficit	(237,398)	(235,185)
Total Stockholders’ Equity	29,283	30,883
Total Liabilities & Stockholders’ Equity	$ 53,170	$ 54,692