Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Activities:
Net loss	$ (176,295)	$ (112,749)	$ (77,837)
Adjustments to reconcile net loss to net cash and cash equivalents provided by operating activities:
Depreciation and amortization	72,673	58,150	45,159
Stock-based compensation	432,271	275,849	166,761
Restructuring charges	67,263	0	0
Loss on early extinguishment of 2022 Convertible Notes	0	0	4,892
Repayment of 2022 Convertible Notes attributable to the debt discount	0	0	(26,428)
Gain on termination of operating leases	0	0	(4,276)
Loss on disposal of fixed assets	0	0	6,468
Gain on strategic investments	0	(4,201)	(11,741)
Impairment of strategic investments	1,704	5,863	0
Provision for (benefit from) deferred income taxes	5,208	(2,122)	(2,869)
Amortization of debt discount and issuance costs	1,986	2,013	23,507
(Accretion) amortization of bond discount	(42,907)	(9,118)	4,275
Unrealized currency translation	(341)	1,010	1,304
Changes in assets and liabilities, net of acquisition
Accounts receivable	(57,618)	(73,985)	(34,107)
Prepaid expenses and other assets	(47,048)	(5,987)	(1,077)
Deferred commission expense	(81,178)	(37,583)	(32,560)
Right-of-use assets	29,173	29,531	31,418
Accounts payable	(14,031)	18,277	(10,608)
Accrued expenses and other current liabilities	87,074	32,375	58,209
Operating lease liabilities	(36,889)	(21,118)	(29,478)
Deferred revenue	109,926	116,969	127,716
Net cash and cash equivalents provided by operating activities	350,971	273,174	238,728
Investing Activities:
Purchases of investments	(1,580,504)	(1,507,870)	(1,484,762)
Maturities of investments	1,502,534	1,184,506	1,387,498
Sale of investments	0	124,998	0
Purchases of property and equipment	(33,718)	(37,426)	(28,726)
Capitalization of software development costs	(66,372)	(44,345)	(33,139)
Purchases of intangible assets	(164)	(10,000)	0
Acquisition of a business, net of cash acquired	(142,129)	0	(16,810)
Proceeds from sale of strategic investments	0	0	12,620
Payments for equity method investments	(2,025)	(3,150)	(3,100)
Purchase of strategic investments	(12,388)	(26,371)	(13,089)
Net cash and cash equivalents used in investing activities	(334,766)	(319,658)	(179,508)
Financing Activities:
Proceeds from settlement of Convertible Note Hedges related to the 2022 Convertible Notes	0	60,483	8,985
Payments for settlement of Warrants related to the 2022 Convertible Notes	0	(34)	0
Payment for settlement of 2022 convertible notes	0	(79,807)	(89,525)
Repayment of 2025 Convertible Notes attributable to the principal	(13)	(1,619)	0
Employee taxes paid related to the net share settlement of stock-based awards	(10,714)	(11,526)	(17,439)
Proceeds related to the issuance of common stock under stock plans	47,738	39,931	46,510
Net cash and cash equivalents provided by (used in) financing activities	37,011	7,428	(51,469)
Effect on exchange rate changes on cash and cash equivalents	4,649	(6,811)	(8,861)
Net (decrease) increase in cash, cash equivalents and restricted cash	57,865	(45,867)	(1,110)
Cash, cash equivalents and restricted cash, beginning of year	334,175	380,042	381,152
Cash, cash equivalents and restricted cash, end of year	392,040	334,175	380,042
Supplemental cash flow disclosure:
Cash paid for interest	1,722	1,746	1,843
Cash paid for income taxes	12,911	4,685	6,970
Right-of-use assets obtained in exchange for operating lease facilities	7,059	74,985	92,131
Right-of-use asset reductions related to operating lease terminations	(7,382)	0	(46,587)
Non-cash investing and financing activities:
Capital expenditures incurred but not yet paid	1,068	247	470
Asset retirement obligations	(199)	1,113	71
Issuance of common stock for repayment of 2022 Convertible Notes	$ 0	$ 0	$ 493,172