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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating activities      
Net income $ 281,594 $ 202,129 $ 402,710
Adjustments to reconcile net income to net cash provided by operating activities:      
Share-based compensation 36,620 24,397 20,820
Depreciation and amortization 11,083 6,493 2,997
Amortization of intangible assets 73,773 43,148 0
Total amortization of debt discount 7,304 7,839 3,642
Amortization of (premium) discounts on marketable securities, net (6,319) 1,106 2,257
Realized loss on marketable securities 0 1,727 0
Loss on disposal of equipment 611 129 0
Contingent liability fair value measurement adjustment (13,200) 0 0
Recognition of deferred revenue 0 (2,494) (1,496)
Lease payments deferred 1,270 (903) (751)
Induced conversion expense related to convertible notes 0 2,712 20,960
Deferred income taxes (including benefit from valuation allowance release) 34,506 40,005 (155,434)
Other 0 (227) (3)
Changes in operating assets and liabilities      
Accounts receivable, net and other contract assets (3,339) (83,941) 6,755
Inventories, net (26,884) (17,481) 7,371
Prepaid expenses and other assets 4,098 (9,064) (11,555)
Accounts payable and accrued expenses (12,546) 24,535 1,167
Net cash provided by operating activities 388,571 240,110 299,440
Investing activities      
Purchases of marketable securities (292,911) (255,208) (652,515)
Proceeds from sales and maturities of marketable securities 211,296 746,127 247,683
Acquisitions of business, net of cash acquired 0 999,120 0
Purchases of property and equipment (15,294) (4,810) (1,457)
Proceeds from sale of assets 0 26,006 0
Net cash used in investing activities (96,909) (487,005) (406,289)
Financing activities      
Proceeds from term loan 0 250,000 0
Repayment of term loan 0 (250,000) 0
Proceeds from revolving credit facilities 0 120,000 0
Repayment of revolving credit facilities 0 120,000 0
Proceeds from issuance of 2027 Convertible Notes, net 0 0 784,875
Repayment of 2024 Convertible Notes 13,483 77,453 369,064
Proceeds from issuance of 2028 Convertible Notes, net 0 702,000 0
Purchase of capped call 0 (69,120) 0
Payment of debt issuance cost 0 (7,104) (424)
Repurchase of common stock (402,383) (200,002) (350,058)
Proceeds from issuance of common stock under equity incentive plans, net of taxes paid related to net share settlement 7,879 14,050 12,536
Net cash (used in) provided by financing activities (407,987) 362,371 77,865
Net (decrease) increase in cash, cash equivalents and restricted cash (116,325) 115,476 (28,984)
Cash, cash equivalents and restricted cash at beginning of period 234,695 119,219 148,203
Cash, cash equivalents and restricted cash at end of period 118,370 234,695 119,219
Supplemental disclosure of cash flow information      
Interest paid 11,410 6,107 3,296
Income taxes paid (received), net 31,756 16,224 (375)
Supplemental disclosure of non-cash investing and financing activities      
Amounts accrued for purchases of property and equipment 25 6,229 72
Right-of-use assets obtained in exchange for lease obligation 2,572 34,435 318
Common stock issued for conversion of 2024 Convertible Notes $ 125 $ 1,018 $ 7,865