Investment Securities (Amortized Cost and Fair Value of Investment Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	$ 1,103,851	$ 1,127,057
Securities available for sale, Unrealized Gains	343	338
Securities available for sale, Unrealized Losses	158,752	173,024
Securities available for sale	945,442	954,371
Securities held to maturity, Amortized Cost	180,057	188,980
Securities held to maturity, Unrealized Gains	32	24
Securities held to maturity, Unrealized Losses	12,277	14,816
Securities held to maturity, fair value	167,812	174,188
Allowance for credit losses, Amortized Cost	(5)	(5)
Held-to-maturity securities, net , Amortized Cost	180,052	188,975
U.S. Government Agency And Government Sponsored Enterprises [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	24,535	24,535
Securities available for sale, Unrealized Gains	0	0
Securities available for sale, Unrealized Losses	2,877	3,420
Securities available for sale	21,658	21,115
Securities held to maturity, Amortized Cost	16,400	16,363
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	544	848
Securities held to maturity, fair value	15,856	15,515
State And Political Subdivisions [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities held to maturity, Amortized Cost	93,678	97,583
Securities held to maturity, Unrealized Gains	32	24
Securities held to maturity, Unrealized Losses	6,012	7,172
Securities held to maturity, fair value	87,698	90,435
Collateralized Mortgage-Backed Securities Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	536,221	545,797
Securities available for sale, Unrealized Gains	0	0
Securities available for sale, Unrealized Losses	68,817	76,193
Securities available for sale	467,404	469,604
Securities held to maturity, Amortized Cost	6,038	8,332
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	457	582
Securities held to maturity, fair value	5,581	7,750
Collateralized Mortgage-Backed Securities Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	398,487	410,829
Securities available for sale, Unrealized Gains	0	0
Securities available for sale, Unrealized Losses	62,373	68,608
Securities available for sale	336,114	342,221
Securities held to maturity, Amortized Cost	7,786	7,959
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	1,256	1,396
Securities held to maturity, fair value	6,530	6,563
Collateralized Mortgage-Backed Securities Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	111,527	112,202
Securities available for sale, Unrealized Gains	1	1
Securities available for sale, Unrealized Losses	18,295	18,037
Securities available for sale	93,233	94,166
Securities held to maturity, Amortized Cost	21,783	22,541
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	1,723	2,116
Securities held to maturity, fair value	20,060	20,425
Collateralized Mortgage Obligations Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	11,938	12,175
Securities available for sale, Unrealized Gains	0	0
Securities available for sale, Unrealized Losses	2,326	2,603
Securities available for sale	9,612	9,572
Securities held to maturity, Amortized Cost	13,536	14,268
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	963	1,119
Securities held to maturity, fair value	12,573	13,149
Collateralized Mortgage Obligations Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	21,143	21,519
Securities available for sale, Unrealized Gains	0	0
Securities available for sale, Unrealized Losses	4,064	4,163
Securities available for sale	17,079	17,356
Securities held to maturity, Amortized Cost	16,781	17,712
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	1,022	1,253
Securities held to maturity, fair value	15,759	16,459
Collateralized Mortgage Obligations Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	0	0
Securities available for sale, Unrealized Gains	342	337
Securities available for sale, Unrealized Losses	0	0
Securities available for sale	342	337
Collateralized Mortgage Obligations Government National Mortgage Association Certificates And Obligations Gnma [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities held to maturity, Amortized Cost	4,055	4,222
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	300	330
Securities held to maturity, fair value	3,755	3,892
Mortgage-Backed Securities [Member]
Schedule of Debt Securities Available For Sale and Held To Maturity Securities [Line Item]
Securities available for sale, Amortized Cost	1,079,316	1,102,522
Securities available for sale, Unrealized Gains	343	338
Securities available for sale, Unrealized Losses	155,875	169,604
Securities available for sale	923,784	933,256
Securities held to maturity, Amortized Cost	69,979	75,034
Securities held to maturity, Unrealized Gains	0	0
Securities held to maturity, Unrealized Losses	5,721	6,796
Securities held to maturity, fair value	$ 64,258	$ 68,238

Allowance for credit losses, amortized cost.

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Debt securities available for sale and held to maturity securities.

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Held-to-maturity securities, net.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on 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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