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Securities - Held-to-Maturity Securities Held by Company (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 312,357	$ 312,344
Gross Unrealized Gains	0	0
Gross Unrealized Losses	45,258	50,652
Fair Value	267,099	261,692
U.S. Treasuries
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	86,425	86,478
Gross Unrealized Gains	0	0
Gross Unrealized Losses	10,966	12,937
Fair Value	75,459	73,541
Obligations of U.S. Government sponsored entities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	225,932	225,866
Gross Unrealized Gains	0	0
Gross Unrealized Losses	34,292	37,715
Fair Value	$ 191,640	$ 188,151

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- Definition

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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