Securities (Schedule of Contractual Maturities of Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	$ 1,402,389	$ 1,459,862
Available for Sale, Fair Value
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,272,831	1,334,256
Held to Maturity, Fair Value
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,545,267	1,569,107
Held to Maturity, Fair Value, Total	1,383,621	1,417,608
Available for Sale Securities and Held to Maturity Securities Amortized Cost	2,947,656
Debt Securities, Available-for-sale and Held-to-maturity	2,656,452
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	226,495
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	220,678
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	1,530,817
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	1,395,521
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	287,108
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	252,069
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Amortized Cost	903,236
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Fair Value	788,184
U.S. government agency securities
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	199,221
Available for Sale, Amortized Cost, Due after five to ten years	30,792
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	230,013	230,198
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	178,800
Available for Sale, Fair Value, Due after five to ten years	26,876
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	205,676	207,138
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	29,086
Held to Maturity, Amortized Cost, Due after one year to five years	0
Held to Maturity, Amortized Cost, Due after five to ten years	0
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	28,243
Held to Maturity, Fair Value, Due after one year to five years	0
Held to Maturity, Fair Value, Due after five to ten years	0
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	29,086	29,521
Held to Maturity, Fair Value, Total	28,243	28,408
Small Business Administration Pooled Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	52,083
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	52,083	53,702
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	44,397
Debt Securities, Available-for-Sale, Excluding Accrued Interest	44,397	46,572
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	0
Held to Maturity, Amortized Cost, Due after five to ten years	7,688
Held to Maturity, Amortized Cost, Due after ten years	121,333
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	0
Held to Maturity, Fair Value, Due after five to ten years	7,048
Held to Maturity, Fair Value, Due after ten years	114,289
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	129,021	130,426
Held to Maturity, Fair Value, Total	121,337	124,653
Debt Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	197,409
Available for Sale, Amortized Cost, Due after one year to five years	917,338
Available for Sale, Amortized Cost, Due after five to ten years	77,490
Available for Sale, Amortized Cost, Due after ten years	210,152
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	192,435
Available for Sale, Fair Value, Due after one year to five years	831,009
Available for Sale, Fair Value, Due after five to ten years	67,617
Available for Sale, Fair Value, Due after ten years	181,770
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	29,086
Held to Maturity, Amortized Cost, Due after one year to five years	613,479
Held to Maturity, Amortized Cost, Due after five to ten years	209,618
Held to Maturity, Amortized Cost, Due after ten years	693,084
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	28,243
Held to Maturity, Fair Value, Due after one year to five years	564,512
Held to Maturity, Fair Value, Due after five to ten years	184,452
Held to Maturity, Fair Value, Due after ten years	606,414
Held to Maturity, Fair Value, Total	1,383,621
Pooled trust preferred securities issued by banks and insurers
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	1,180
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	1,180	1,188
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	1,036
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,036	1,018
Single Issuer Trust Preferred Securities Issued by Banks and Insurers
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	1,500
Held to Maturity, Amortized Cost, Due after five to ten years	0
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	1,372
Held to Maturity, Fair Value, Due after five to ten years	0
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,500	1,500
Held to Maturity, Fair Value, Total	1,372	1,373
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	195
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	195	195
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	191
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	191	190
Agency Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	0
Available for Sale, Amortized Cost, Due after one year to five years	0
Available for Sale, Amortized Cost, Due after five to ten years	2,837
Available for Sale, Amortized Cost, Due after ten years	31,807
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	34,644	35,713
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	0
Available for Sale, Fair Value, Due after one year to five years	0
Available for Sale, Fair Value, Due after five to ten years	2,586
Available for Sale, Fair Value, Due after ten years	29,502
Debt Securities, Available-for-Sale, Excluding Accrued Interest	32,088	33,189
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	63,456
Held to Maturity, Amortized Cost, Due after five to ten years	19,228
Held to Maturity, Amortized Cost, Due after ten years	382,332
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	58,528
Held to Maturity, Fair Value, Due after five to ten years	16,930
Held to Maturity, Fair Value, Due after ten years	317,800
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	465,016	477,517
Held to Maturity, Fair Value, Total	393,258	407,911
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	1
Available for Sale, Amortized Cost, Due after one year to five years	140,616
Available for Sale, Amortized Cost, Due after five to ten years	43,861
Available for Sale, Amortized Cost, Due after ten years	125,082
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	309,560	314,269
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	1
Available for Sale, Fair Value, Due after one year to five years	125,614
Available for Sale, Fair Value, Due after five to ten years	38,155
Available for Sale, Fair Value, Due after ten years	106,835
Debt Securities, Available-for-Sale, Excluding Accrued Interest	270,605	277,047
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	448,783
Held to Maturity, Amortized Cost, Due after five to ten years	181,710
Held to Maturity, Amortized Cost, Due after ten years	189,419
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	414,620
Held to Maturity, Fair Value, Due after five to ten years	159,656
Held to Maturity, Fair Value, Due after ten years	174,325
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	819,912	829,431
Held to Maturity, Fair Value, Total	748,601	763,728
US Treasury Securities [Member]
Schedule of Available-for-sale Securities and Held-to-maturity Securities [Line Items]
Available for Sale, Amortized Cost, Due in one year or less	197,408
Available for Sale, Amortized Cost, Due after one year to five years	577,306
Available for Sale, Amortized Cost, Due after five to ten years	0
Available for Sale, Amortized Cost, Due after ten years	0
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	774,714	824,597
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	192,434
Available for Sale, Fair Value, Due after one year to five years	526,404
Available for Sale, Fair Value, Due after five to ten years	0
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	718,838	769,102
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	0
Held to Maturity, Amortized Cost, Due after one year to five years	99,740
Held to Maturity, Amortized Cost, Due after five to ten years	992
Held to Maturity, Amortized Cost, Due after ten years	0
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	0
Held to Maturity, Fair Value, Due after one year to five years	89,992
Held to Maturity, Fair Value, Due after five to ten years	818
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	100,732	100,712
Held to Maturity, Fair Value, Total	$ 90,810	$ 91,535