Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 6,532	$ 4,181
Accounts receivable, less allowance of $2,124 and $2,164 as of March 31, 2023 and December 31, 2022, respectively	5,158	5,841
Inventory	17,775	15,884
Prepaid expenses and other current assets	2,499	3,053
Total current assets	31,964	28,959
Property, plant, and equipment, net	4,719	4,278
Goodwill	2,926	2,926
Right of use asset	2,078	1,768
Other assets	257	255
Total assets	41,944	38,186
Current liabilities:
Accounts payable	7,540	5,786
Accrued liabilities	7,977	9,210
Deferred revenue, current portion	2,082	2,111
Current portion of term loans, net of discount	1,400	700
Total current liabilities	18,999	17,807
Deferred revenue	355	418
Warranty accrual	426	360
Non current term loans, net of discount	12,496	13,091
Non current operating lease liability	1,432	1,259
Other liabilities	78	362
Total liabilities	33,786	33,297
Stockholders' equity:
Common stock, par value $0.001 per share; 180,000 shares authorized, 26,329 and 7,723 shares issued and 26,327 and 7,721 shares outstanding as of March 31, 2023 and December 31, 2022, respectively	26	8
Additional paid-in-capital	310,802	301,782
Accumulated other comprehensive loss	(653)	(733)
Accumulated deficit	(302,017)	(296,168)
Total stockholders' equity	8,158	4,889
Total liabilities, redeemable preferred stock and stockholders' equity	$ 41,944	$ 38,186