Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 164,164	$ 47,047
Accounts receivable, net of allowance for credit losses of $899 and $1,598, respectively	31,449	21,962
Inventories	39,503	28,508
Other current assets and prepaid expenses	14,545	8,779
Total current assets	249,661	106,296
Property and equipment, net	3,019	2,299
Deferred tax assets	778	643
Operating lease right-of-use assets	14,627	17,076
Goodwill	1,339	1,339
Other long-term assets	10,169	5,080
Restricted cash	700	0
Total assets	280,293	132,733
Current liabilities:
Accounts payable	7,891	6,684
Accrued liabilities	54,100	32,295
Operating lease liabilities	2,419	2,260
PPP loan payable	0	3,630
Deferred revenue	9,490	9,489
Total current liabilities	73,900	54,358
Deferred revenue, net of current portion	1,335	1,748
Operating lease liabilities, net of current portion	13,483	15,950
PPP loan payable, net of current portion	0	3,555
Convertible notes, net of unamortized debt issuance costs of $4,007	134,243	0
Other long-term liabilities	763	242
Total liabilities	223,724	75,853
Commitments and contingencies (Note 11).
Stockholders’ equity:
Common stock, $0.001 par value: Authorized: 50,000,000 shares; Issued and outstanding: 17,995,344 and 17,679,232 shares at December 31, 2021 and 2020, respectively	18	18
Additional paid-in capital	114,724	117,097
Accumulated deficit	(58,173)	(60,235)
Total stockholders’ equity	56,569	56,880
Total liabilities and stockholders’ equity	$ 280,293	$ 132,733