Available for Sale Debt Securities - Summary of Available for Sale Debt Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt and Equity Securities, FV-NI [Line Items]
Cost	$ 367,878	$ 504,029
Unrealized Gains	60,822	235,591
Fair Value	428,700	739,620
Current Assets	18,800	58,200
Non-Current Assets	419,000	693,500
Non-Current Liabilities	(9,100)	(12,080)
Debt Securities
Debt and Equity Securities, FV-NI [Line Items]
Cost	382,378	516,329
Unrealized Gains	55,422	235,371
Fair Value	437,800	751,700
Current Assets	18,800	58,200
Non-Current Assets	419,000	693,500
Non-Current Liabilities	0	0
Funding Commitments
Debt and Equity Securities, FV-NI [Line Items]
Cost	(14,500)	(12,300)
Unrealized Gains	5,400	220
Fair Value	(9,100)	(12,080)
Current Assets	0	0
Non-Current Assets	0	0
Non-Current Liabilities	$ (9,100)	$ (12,080)

Debt Securities, Available-for-Sale, Adjustment

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