Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating activities
Net loss	$ (41,238)	$ (39,500)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	7,626	7,667
Depreciation and amortization	3,536	1,543
Amortization of deferred financing costs	379	367
Amortization of premium on short-term investments, net	103	606
Non-cash operating lease cost	1,107	950
Allowance for inventory obsolescence and accounts receivable credit loss	2,171	610
Changes in operating assets and liabilities:
Accounts receivable	(3,489)	9,425
Inventory	(5,564)	(4,054)
Prepaid expenses and other assets	(263)	(3,050)
Accounts payable	3,209	3,924
Accrued liabilities	(82)	(3,372)
Accrued compensation and other employee benefits	(4,917)	(5,130)
Customer deposits	(16)	(16)
Deferred revenue and other liabilities	2,974	945
Operating lease liabilities	(1,285)	(1,168)
Net cash used in operating activities	(35,749)	(30,253)
Investing activities
Purchases of property and equipment	(4,982)	(3,002)
Purchase of internal-use software assets	(2,696)	(2,167)
Payments to Acquire Intangible Assets	0	(750)
Proceeds from maturity of short-term investments	51,476	37,424
Purchases of short-term investments	0	(10,800)
Net cash provided by investing activities	43,798	20,705
Financing activities
Tax withholdings related to net share settlements of restricted stock units	(490)	(1,504)
Proceeds from issuance of common stock for employee stock purchase plan	1,354	1,502
Proceeds from exercise of stock options	20	1,035
Repayment of finance lease obligations	(70)	(73)
Net cash provided by financing activities	814	960
Effect of exchange rate changes on cash, restricted cash and cash equivalents	22	(23)
Net increase (decrease) in cash, restricted and cash equivalents	8,885	(8,611)
Cash, restricted cash and cash equivalents
Beginning of period	113,148	107,068
End of period	122,033	98,457
Supplemental disclosures
Cash and cash equivalents	121,408	98,457
Restricted Cash and Cash Equivalents, Current	$ 625	$ 0