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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Operating activities    
Net (loss) income $ (50,451) $ 20,259
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Depreciation and amortization 3,706 3,443
Amortization of right-of-use assets 2,463 2,538
Inventory write off 3,638 1,264
Sublease termination loss (Note 5) 0 4,765
Accretion of discounts on marketable securities (5,034) (11,892)
Stock-based compensation expense 39,824 39,615
Bad debt expense 10,970 0
Non-cash interest expense 820 2,272
Loss on debt extinguishment 82,095 0
Changes in operating assets and liabilities:    
Accounts and other receivables, net (26,415) (30,744)
Inventories (6,872) (10,376)
Prepaid manufacturing 0 (6,893)
Prepaid expenses and other current assets (2,260) (2,643)
Other assets 0 (878)
Accounts payable (5,148) 2,023
Lease liabilities (3,151) (3,220)
Accrued and other liabilities (6,564) 3,968
Net cash provided by operating activities 37,621 13,501
Investing activities    
Purchases of marketable securities (251,655) (491,047)
Proceeds from maturities and redemption of marketable securities 387,297 452,520
Purchases of property and equipment, net (6,617) (2,874)
Net cash provided by (used in) investing activities 129,025 (41,401)
Financing activities    
Proceeds from issuance of Convertible Notes (Note 7) 39,708 0
Payment for debt issuance costs (Note 7) (4,500) 0
Payments for debt extinguishment (Note 7) (80,938) 0
Proceeds from unwind of capped call options (Note 7) 46,554 0
Payments for repurchase of common stock (Note 11) (101,207) 0
Proceeds from exercise of stock options 6,833 3,925
Proceeds from Employee Stock Purchase Plan 1,499 1,760
Payments for taxes related to net share settlement of restricted and performance stock units (11,810) (8,827)
Net cash used in financing activities (103,861) (3,142)
Effect of exchange rate changes on cash and cash equivalents, and restricted cash 1,613 98
Net increase (decrease) in cash and cash equivalents, and restricted cash 64,398 (30,944)
Cash and cash equivalents, and restricted cash at beginning of period 96,154 150,556
Cash and cash equivalents, and restricted cash at end of period 160,552 119,612
Supplemental disclosure of cash flow information    
Cash paid during the period for income taxes 2,605 4,577
Cash paid during the period for interest 2,021 2,819
Non-cash investing and financing activities:    
Purchases of property and equipment, not yet paid 2,105 762
Right-of-use assets obtained in exchange of operating lease liabilities $ 405 $ 0