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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Cash Flows from Operating Activities:    
Net income (loss) $ 16,725 $ (7,723)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 25,069 19,245
Amortization of deferred contract acquisition costs 26,754 23,418
Non-cash lease expense 8,070 7,015
Stock-based compensation 120,557 149,473
Discount amortization on marketable securities (1,335) (5,516)
Gain on sale of non-marketable equity investments 0 (1,837)
Deferred income taxes 7,183 (459)
Net foreign currency loss 10,281 0
Other 1,048 717
Changes in operating assets and liabilities:    
Accounts receivable 14,734 3,027
Deferred contract acquisition costs (30,900) (29,361)
Prepaid expenses and other assets (494) (15,373)
Accounts payable 6,874 5,597
Accrued and other liabilities (10,932) 13,216
Deferred revenue 13,548 24,309
Operating lease liabilities (8,569) (5,712)
Net cash provided by operating activities 198,613 180,036
Cash Flows from Investing Activities:    
Purchases of property and equipment (11,777) (3,468)
Proceeds from sale of property and equipment 9 94
Capitalized internal-use software (6,970) (11,919)
Purchases of marketable securities (471,487) (490,992)
Sale of non-marketable equity investments 0 1,984
Maturities and redemptions of marketable securities 452,978 553,234
Business combination, net of cash acquired (56,913) 0
Net cash (used in) provided by investing activities (94,160) 48,933
Cash Flows from Financing Activities:    
Proceeds from issuance of common stock under employee stock purchase plan, net 3,061 3,307
Proceeds from exercise of stock options 2 74
Payment of withholding taxes on net share settlement of equity awards (28,657) (45,414)
Repurchase of common stock (234,623) (386,306)
Net cash used in financing activities (260,217) (428,339)
Effects of exchange rate changes on cash, cash equivalents and restricted cash (8,695) 0
Net decrease in cash, cash equivalents and restricted cash (164,459) (199,370)
Cash, cash equivalents and restricted cash, beginning of period 632,250 620,405
Cash, cash equivalents and restricted cash, end of period 467,791 421,035
Reconciliation of cash, cash equivalents and restricted cash to condensed consolidated balance sheets:    
Cash and cash equivalents 466,650 420,934
Restricted cash, current 1,141 0
Restricted cash included in other assets 0 101
Total cash, cash equivalents and restricted cash 467,791 421,035
Supplemental cash flow information:    
Cash paid for taxes 9,301 10,499
Non-cash investing and financing activities:    
Property and equipment purchases in accounts payable 1,583 0
Operating lease right-of-use assets obtained in exchange for operating lease obligations, net of modifications 0 7,084
Stock-based compensation capitalized as internal-use software 1,707 2,579
Accrued excise tax on share repurchases $ 1,842 $ 2,944