Investment Securities - Amortized Cost and Fair Values of Debt Securities Held to Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 461,162	$ 541,311
Gross Unrealized Gains	0	3,768
Gross Unrealized Losses	(74,957)	(8,428)
Estimated Fair Value	386,205	536,651
ERROR in label resolution.
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	1,000	1,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(40)	(3)
Estimated Fair Value	960	997
US States and Political Subdivisions Debt Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	26,643	29,402
Gross Unrealized Gains	0	414
Gross Unrealized Losses	(2,865)	(103)
Estimated Fair Value	23,778	29,713
Mortgage - Backed Securities - Commercial [Member] \| Obligations of U.S. Government [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	75,229	91,439
Gross Unrealized Gains	0	305
Gross Unrealized Losses	(14,196)	(1,939)
Estimated Fair Value	61,033	89,805
Mortgage - Backed Securities - Commercial [Member] \| Obligations of U.S. Government-Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	4,794	7,309
Gross Unrealized Gains	0	148
Gross Unrealized Losses	(129)	0
Estimated Fair Value	4,665	7,457
Mortgage - Backed Securities - Residential [Member] \| Obligations of U.S. Government [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,008	2,409
Gross Unrealized Gains	0	101
Gross Unrealized Losses	(224)	0
Estimated Fair Value	1,784	2,510
Mortgage - Backed Securities - Residential [Member] \| Obligations of U.S. Government-Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	329,267	387,848
Gross Unrealized Gains	0	2,800
Gross Unrealized Losses	(53,002)	(5,758)
Estimated Fair Value	276,265	384,890
Other Government - Sponsored Enterprises [Member] \| Obligations of U.S. Government-Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	22,221	21,904
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(4,501)	(625)
Estimated Fair Value	$ 17,720	$ 21,279

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

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