Investment Securities (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Investment Securities Information [Line Items]
Debt Instrument, Collateral Amount	$ 1,200,000	$ 1,200,000
Interest Receivable	161,021	161,118
Held to maturity allowance for credit loss	(100)	(100)
Federal Home Loan Bank Stock	192,100	154,400
Federal Reserve Bank Stock	98,100	98,100
Equity securities with readily determinable fair values, Fair Value	11,100	11,100
Equity securities	15,000	15,000
Held-to-maturity Securities [Member]
Investment Securities Information [Line Items]
Interest Receivable	15,300	17,700
Available-for-sale Securities [Member]
Investment Securities Information [Line Items]
Interest Receivable	22,800	23,000
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member]
Investment Securities Information [Line Items]
Interest Receivable	3,600	2,800
Federal Reserve Bank Stock [Member]
Investment Securities Information [Line Items]
Interest Receivable	1,000	0
US Treasury Securities
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0	0
US States and Political Subdivisions Debt Securities [Member]
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	0	0
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]
Investment Securities Information [Line Items]
Held to maturity allowance for credit loss	$ 0	$ 0

Investment Securities Information

No definition available.

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- Definition

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).

+ References

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- Definition

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).

+ References

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- Definition

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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