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Marketable Investments - Unrealized Losses on Debt Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-Sale [Line Items]
Less than 12 Months - Market Value	$ 0	$ 13,098
Less than 12 Months - Unrealized Losses	0	8
12 Months or Greater - Market Value	2,983	6,872
12 Months or Greater - Unrealized Losses	8	71
Corporate obligations [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than 12 Months - Market Value	0	13,098
Less than 12 Months - Unrealized Losses	0	8
12 Months or Greater - Market Value	2,983	4,879
12 Months or Greater - Unrealized Losses	$ 8	64
Federal agency obligations [Member]
Debt Securities, Available-for-Sale [Line Items]
Less than 12 Months - Market Value		0
Less than 12 Months - Unrealized Losses		0
12 Months or Greater - Market Value		1,993
12 Months or Greater - Unrealized Losses		$ 7

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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