Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Operating activities
Net loss	$ (84,906)	$ (78,739)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	16,062	14,125
Depreciation and amortization	7,442	3,504
Amortization of deferred financing costs	757	732
Amortization of premium on short-term investments, net	102	1,200
Non-cash operating lease cost	2,207	1,954
Allowance for inventory obsolescence and accounts receivable credit loss	4,912	1,708
Changes in operating assets and liabilities:
Accounts receivable	(11,496)	7,920
Inventory	(11,036)	(11,531)
Prepaid expenses and other assets	3,495	(1,827)
Accounts payable	4,884	2,063
Accrued liabilities	3,164	682
Accrued compensation and other employee benefits	(4,414)	(3,453)
Customer deposits	322	310
Deferred revenue and other liabilities	3,907	1,026
Operating lease liabilities	(2,599)	(2,397)
Net cash used in operating activities	(67,197)	(62,723)
Investing activities
Purchases of property and equipment	(9,665)	(7,635)
Purchase of internal-use software assets	(3,705)	(4,118)
Payments to Acquire Intangible Assets	0	(750)
Proceeds from Sale of Short-Term Investments	0	4,000
Proceeds from maturity of short-term investments	81,476	134,974
Purchases of short-term investments	0	(45,800)
Net cash provided by investing activities	68,106	80,671
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	112	1,300
Repayment of finance lease obligations	(126)	(183)
Net cash provided by financing activities	850	1,115
Effect of exchange rate changes on cash, restricted cash and cash equivalents	23	(104)
Net increase in cash, restricted and cash equivalents	1,782	18,959
Cash, restricted cash and cash equivalents
Beginning of period	113,148	107,068
End of period	114,930	126,027
Supplemental disclosures
Cash and cash equivalents	114,305	$ 126,027
Restricted Cash and Cash Equivalents, Current	$ 625