Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measures (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details)

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Fair Value Measures (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Jun. 30, 2023
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure $ 523,145 $ 578,561 $ 178,458
Liabilities, Fair Value Disclosure 2,164 9,019 6,697
Level 1      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 50,294 103,560 85,864
Liabilities, Fair Value Disclosure 0 0 0
Level 2      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 472,851 475,001 92,594
Liabilities, Fair Value Disclosure 2,164 9,019 6,697
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 20,204 75,758 60,565
Money market funds | Short-term investments:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 343 314 287
Money market funds | Other non-current assets:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 1,502 1,796 1,688
Money market funds | Level 1 | Cash equivalents:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 20,204 75,758 60,565
Money market funds | Level 1 | Short-term investments:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 343 314 287
Money market funds | Level 1 | Other non-current assets:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 1,502 1,796 1,688
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 34,813 9,977  
U.S. Government treasury bills | Available-for-sale Securities      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 367,031 412,987 69,751
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 34,813 9,977  
U.S. Government treasury bills | Level 2 | Available-for-sale Securities      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 367,031 412,987 69,751
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 16,734 10,200 19,308
Derivative financial instruments | Other non-current assets:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 6,492 961 3,535
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 16,734 10,200 19,308
Derivative financial instruments | Level 2 | Other non-current assets:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 6,492 961 3,535
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 2,099 6,390 5,165
Derivative financial instruments | Other long-term liabilities:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Liabilities, Fair Value Disclosure 65 2,629 1,532
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 2,099 6,390 5,165
Derivative financial instruments | Level 2 | Other long-term liabilities:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Liabilities, Fair Value Disclosure 65 2,629 1,532
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 1,902 884 1,187
Mutual fund shares | Other non-current assets:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 26,343 24,808 22,137
Mutual fund shares | Level 1 | Short-term investments:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 1,902 884 1,187
Mutual fund shares | Level 1 | Other non-current assets:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 26,343 24,808 22,137
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 47,781 40,876  
Time deposits | Level 1 | Cash equivalents:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 0 0  
Time deposits | Level 2 | Cash equivalents:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure 47,781 40,876  
Time deposits | Level 3 | Cash equivalents:      
Fair Value, Option, Quantitative Disclosures [Line Items]      
Assets, Fair Value Disclosure $ 0 $ 0