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Securities - Held-to-Maturity Securities Held by Company (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 312,415	$ 312,401
Gross Unrealized Gains	0	0
Gross Unrealized Losses	47,313	44,946
Fair Value	265,102	267,455
U.S. Treasuries
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	86,211	86,266
Gross Unrealized Gains	0	0
Gross Unrealized Losses	12,075	11,051
Fair Value	74,136	75,215
Obligations of U.S. Government sponsored entities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	226,204	226,135
Gross Unrealized Gains	0	0
Gross Unrealized Losses	35,238	33,895
Fair Value	$ 190,966	$ 192,240

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Amount excluding accrued interest, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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