Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities
Net loss	$ (86,477)	$ (105,600)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	5,543	6,552
Depreciation and amortization	5,464	5,225
Amortization of contract acquisition costs	3,882	7,085
Amortization of discount on convertible notes and debt issuance costs	1,726	1,670
Accretion of discount on investment securities and investment income, net	0	1,048
Deferred tax assets	(11)	62
Provision for credit losses	9,740	5,488
Changes in assets and liabilities:
Accounts receivable	232	(9,755)
Inventories	3,259	1,781
Other current assets and prepaid expenses	7,010	4,352
Other long-term assets	(472)	(5,642)
Accounts payable	(11,880)	(4,735)
Accrued liabilities	(18,704)	(10,963)
Operating leases, net	(83)	(44)
Deferred revenue	(1,845)	(390)
Net cash used in operating activities	(82,616)	(103,866)
Cash flows from investing activities
Acquisition of property and equipment	(1,390)	(30,642)
Proceeds from disposal of property and equipment	63	0
Proceeds from maturities of marketable investments	0	193,903
Purchase of marketable investments	0	(23,467)
Net cash provided by (used in) investing activities	(1,327)	139,794
Cash flows from financing activities
Proceeds from exercise of stock options and employee stock purchase plan	0	1,323
Taxes paid related to settlement of equity awards	(110)	(3,273)
Payments on finance lease obligations	(582)	(386)
Net cash used in financing activities	(692)	(2,336)
Net increase (decrease) in cash, cash equivalents and restricted cash	(84,635)	33,592
Cash, cash equivalents, and restricted cash at beginning of period	143,612	146,624
Cash, cash equivalents, and restricted cash at end of period	58,977	180,216
Supplemental non-cash operating, investing, and financing activities:
Assets acquired under finance lease	0	1,428
Assets acquired under operating lease	2,749	57
Acquisition of property and equipment	0	6,503
Transfer of property and equipment to inventory	10,925	928
Supplemental disclosure of cash flow information:
Cash paid for interest	6,764	6,509
Cash paid for income taxes	$ 1,601	$ 1,160