Investment Securities - Realized Gains and Losses on Securities Available-for-Sale (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of securities available-for-sale	$ 0	$ 693,338	$ 3,028,011
Available-for-sale Securities, Gross Realized Gains	0	1,396	0
Available-for-sale Securities, Gross Realized Losses	0	61,796	442,413
Realized Investment Gains	0	(60,400)	(442,413)
Available-for-sale Securities
Debt Securities, Available-for-sale [Line Items]
Proceeds from sales of securities available-for-sale	$ 0	$ 753,738	$ 3,470,424