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Fair Value Measures (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024
--- | --- | --- | ---
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | $ 84,759 | $ 615,533 | $ 186,522
Liabilities, Fair Value Disclosure | 16,706 | 1,738 | 6,362
Level 1 |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 42,048 | 193,340 | 82,554
Liabilities, Fair Value Disclosure | 0 | 0 | 0
Level 2 |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 42,711 | 422,193 | 103,968
Liabilities, Fair Value Disclosure | 16,706 | 1,738 | 6,362
Level 3 |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Liabilities, Fair Value Disclosure | 0 | 0 | 0
Money market funds | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 5,207 | 160,743 | 50,149
Money market funds | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 262 | 384 | 253
Money market funds | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 3,535 | 1,263 | 1,122
Money market funds | Level 1 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 5,207 | 160,743 | 50,149
Money market funds | Level 1 | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 262 | 384 | 253
Money market funds | Level 1 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 3,535 | 1,263 | 1,122
Money market funds | Level 2 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Money market funds | Level 2 | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Money market funds | Level 2 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Money market funds | Level 3 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Money market funds | Level 3 | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Money market funds | Level 3 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
U.S. government treasury bills | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 9,988 | 84,622 |
U.S. government treasury bills | Available-for-sale Securities |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 4,996 | 281,499 | 64,975
U.S. government treasury bills | Level 1 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 |
U.S. government treasury bills | Level 1 | Available-for-sale Securities |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
U.S. government treasury bills | Level 2 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 9,988 | 84,622 |
U.S. government treasury bills | Level 2 | Available-for-sale Securities |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 4,996 | 281,499 | 64,975
U.S. government treasury bills | Level 3 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 |
U.S. government treasury bills | Level 3 | Available-for-sale Securities |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Prepaid expenses and other current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 6,899 | 24,629 | 4,754
Derivative financial instruments | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 1,388 | 9,137 | 817
Derivative financial instruments | Level 1 | Prepaid expenses and other current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Level 1 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Level 2 | Prepaid expenses and other current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 6,899 | 24,629 | 4,754
Derivative financial instruments | Level 2 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 1,388 | 9,137 | 817
Derivative financial instruments | Level 3 | Prepaid expenses and other current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Level 3 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Accrued liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 10,589 | 1,725 | 5,098
Derivative financial instruments | Other long-term liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 6,117 | 13 | 1,264
Derivative financial instruments | Level 1 | Accrued liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Level 1 | Other long-term liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Level 2 | Accrued liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 10,589 | 1,725 | 5,098
Derivative financial instruments | Level 2 | Other long-term liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 6,117 | 13 | 1,264
Derivative financial instruments | Level 3 | Accrued liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 0 | 0 | 0
Derivative financial instruments | Level 3 | Other long-term liabilities: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Liabilities, Fair Value Disclosure | 0 | 0 | 0
Mutual fund shares | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 1,937 | 1,725 | 2,016
Mutual fund shares | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 31,107 | 29,225 | 29,014
Mutual fund shares | Level 1 | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 1,937 | 1,725 | 2,016
Mutual fund shares | Level 1 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 31,107 | 29,225 | 29,014
Mutual fund shares | Level 2 | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Mutual fund shares | Level 2 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Mutual fund shares | Level 3 | Short-term investments: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Mutual fund shares | Level 3 | Other non-current assets: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Time deposits | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 19,440 | 22,306 | 33,422
Time deposits | Level 1 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 | 0
Time deposits | Level 2 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | 19,440 | 22,306 | 33,422
Time deposits | Level 3 | Cash equivalents: |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |
Assets, Fair Value Disclosure | $ 0 | $ 0 | $ 0

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