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Fair Value Measurements (Narrative) (Details) $ in Thousands	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Oct. 07, 2020	Nov. 15, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	$ 0	$ 27,109
Measurement Input, Discount Rate \| Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, measurement input	0.13	0.13
Measurement Input, Discount Rate \| Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, measurement input	0.14	0.14
Measurement Input, Conversion Term \| Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, term	1 year	1 year
Measurement Input, Conversion Term \| Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities, available-for-sale, term	3 years	3 years
$4.625% Senior Notes \| Senior Notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate			4.625%
$1.75% Convertible Notes \| Convertible Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate				1.75%