Schedule of Investment Securities Information [Line Items]

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Visa B Shares, Amount Sold

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Amount of assets pledged to secure a debt instrument.

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- Definition

Amount of allowance for credit loss for debt security measured at amortized cost (held-to-maturity).

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

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Amount of investment in equity security without readily determinable fair value.

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- Definition

Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Investment Securities (Details Textual) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Schedule of Investment Securities Information [Line Items]
Proceeds from Sale of Debt Securities, Available-for-sale	$ 1,100,000		$ 715,100	$ 0	$ 1,141,231	$ 715,066
Gain (Loss) on Sale of Investments					148,200	$ 64,900
Visa B Shares, Amount Sold			1,000
Debt Instrument, Collateral Amount	1,500,000			1,200,000	1,500,000
Interest Receivable	167,772			161,118	167,772
Held to maturity allowance for credit loss	(100)			(100)	(100)
Federal Home Loan Bank Stock	91,500			154,400	91,500
Federal Reserve Bank Stock	88,100			98,100	88,100
Equity Securities with Readily Determined Fair Value	10,700			11,100	10,700
Equity Securities without Readily Determinable Fair Value, Amount	12,600			15,000	12,600
Held-to-Maturity Securities [Member]
Schedule of Investment Securities Information [Line Items]
Interest Receivable	18,100			17,700	18,100
Available-for-sale Securities [Member]
Schedule of Investment Securities Information [Line Items]
Gain (Loss) on Sale of Investments	(148,200)		$ (64,900)
Interest Receivable	21,400			23,000	21,400
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]
Schedule of Investment Securities Information [Line Items]
Interest Receivable	1,800			2,800	1,800
Visa B Shares
Schedule of Investment Securities Information [Line Items]
Gain (Loss) on Sale of Investments		$ 4,100	$ 5,900
Federal Reserve Bank Stock [Member]
Schedule of Investment Securities Information [Line Items]
Interest Receivable	0			0	0
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0			0	0
US Treasury Securities [Member]
Schedule of Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0			0	0
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	$ 0			$ 0	$ 0