Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
OPERATING ACTIVITIES:
Net loss	$ (416,277)	$ (436,373)	$ (479,449)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	39,736	42,387	42,881
Operating lease costs	33,577	31,133	29,699
Gain on extinguishment of convertible notes	(13,672)	0	0
Stock-based compensation	166,217	140,411	90,759
Interest income received on marketable debt securities	7,677	0	0
Amortization of discount on marketable debt securities	(5,877)	(6,774)	(13,552)
Unrealized and realized losses (gains) on marketable equity securities	0	44,401	(79,710)
Impairment of non-marketable equity securities and other related assets	18,582	0	29,054
Other	(294)	5,819	1,503
Changes in operating assets and liabilities:
Accounts receivable, net	(28,175)	(21,389)	8,378
Inventory, net	(14,792)	(9,135)	(10,350)
Prepaid expenses and other current assets, net	(6,354)	(7,691)	(4,332)
Other assets, net	212	(2,375)	1,298
Accounts payable and accrued liabilities	52,749	(2,820)	5,191
Other legal liabilities	0	0	83,400
Operating lease liabilities	(37,524)	(36,115)	(31,478)
Deferred revenue	19,455	18,663	1,733
Net cash used in operating activities	(184,760)	(239,858)	(324,975)
INVESTING ACTIVITIES:
Purchases of marketable debt securities	(818,231)	(307,323)	(629,902)
Maturities of marketable debt securities	307,323	35,000	1,494,700
Sales of marketable equity securities and other related assets	0	53,600	1,531
Purchases of non-marketable equity securities and other related assets	(9,000)	(7,500)	(5,593)
Purchases of property and equipment	(48,306)	(35,085)	(20,486)
Acquisition of business, net of cash acquired	(58,988)	0	0
Net cash (used in) provided by investing activities	(627,202)	(261,308)	840,250
FINANCING ACTIVITIES:
Proceeds from issuance of common stock under employee stock purchase plan	13,585	11,719	10,154
Proceeds from issuance of common stock upon exercise of stock options	19,223	3,119	405
Employee taxes paid related to net share settlement of restricted stock units	(30,535)	(15,681)	(11,197)
Repurchase of treasury stock	(45,010)	0	0
Proceeds from reissuance of treasury stock	87,872	0	0
Proceeds from equity offerings	257,128	0	493,116
Payment of equity offering costs	(17,668)	0	(21,131)
Proceeds from borrowings on convertible senior notes	402,500	0	0
Payment of debt issuance costs	(24,588)	0	0
Proceeds from unwinding of convertible note hedges	5,030	0	0
Other	3,596	(153)	6,028
Net cash provided by (used in) financing activities	671,133	(996)	477,375
Net effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	491	(1,770)	(911)
Net (decrease) increase in cash, cash equivalents and restricted cash	(140,338)	(503,932)	991,739
Cash, cash equivalents and restricted cash – Beginning of period	629,755	1,133,687	141,948
Cash, cash equivalents and restricted cash – End of period	489,417	629,755	1,133,687
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	3,771	0	0
Cash paid for income taxes	869	1,007	1,969
Supplemental Disclosures of Noncash Investing and Financing Activities:
Operating lease liabilities arising from obtaining right-of-use assets	41,224	7,899	5,015
Purchases of property and equipment included in accounts payable and accrued liabilities	4,111	3,809	5,279
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	378,203	525,540	1,133,537
Restricted cash – included in restricted cash	111,214	104,215	150
Total cash, cash equivalents and restricted cash	$ 489,417	$ 629,755	$ 1,133,687