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Securities (Schedule of Contractual Maturities of Securities) (Details) - USD ($)
$ in Thousands
Sep. 30, 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 $ 1,334,733 $ 1,459,862
Available for Sale, Fair Value    
Debt Securities, Available-for-Sale, Excluding Accrued Interest 1,247,211 1,334,256
Held to Maturity, Fair Value    
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss 1,492,315 1,569,107
Held to Maturity, Fair Value, Total 1,377,465 1,417,608
Available for Sale Securities and Held to Maturity Securities Amortized Cost 2,827,048  
Debt Securities, Available-for-sale and Held-to-maturity 2,624,676  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost 225,049  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value 220,571  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost 1,475,421  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value 1,386,961  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost 258,418  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value 235,773  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Amortized Cost 868,160  
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Fair Value 781,371  
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 229,642  
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 229,642 230,198
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 213,084  
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 213,084 207,138
Held to Maturity, Amortized Cost    
Held to Maturity, Amortized Cost, Due in one year or less 28,218  
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 28,062  
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 28,218 29,521
Held to Maturity, Fair Value, Total 28,062 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 49,587  
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 49,587 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 43,643  
Debt Securities, Available-for-Sale, Excluding Accrued Interest 43,643 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 7,076  
Held to Maturity, Amortized Cost, Due after ten years 118,278  
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 6,643  
Held to Maturity, Fair Value, Due after ten years 115,257  
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss 125,354 130,426
Held to Maturity, Fair Value, Total 121,900 124,653
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 196,831  
Available for Sale, Amortized Cost, Due after one year to five years 847,126  
Available for Sale, Amortized Cost, Due after five to ten years 73,632  
Available for Sale, Amortized Cost, Due after ten years 217,144  
Available for Sale, Fair Value    
Available for Sale, Fair Value, Due in one year or less 192,509  
Available for Sale, Fair Value, Due after one year to five years 790,434  
Available for Sale, Fair Value, Due after five to ten years 69,197  
Available for Sale, Fair Value, Due after ten years 195,071  
Held to Maturity, Amortized Cost    
Held to Maturity, Amortized Cost, Due in one year or less 28,218  
Held to Maturity, Amortized Cost, Due after one year to five years 628,295  
Held to Maturity, Amortized Cost, Due after five to ten years 184,786  
Held to Maturity, Amortized Cost, Due after ten years 651,016  
Held to Maturity, Fair Value    
Held to Maturity, Fair Value, Due in one year or less 28,062  
Held to Maturity, Fair Value, Due after one year to five years 596,527  
Held to Maturity, Fair Value, Due after five to ten years 166,576  
Held to Maturity, Fair Value, Due after ten years 586,300  
Held to Maturity, Fair Value, Total 1,377,465  
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 1,027  
Debt Securities, Available-for-Sale, Excluding Accrued Interest 1,027 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 1,451  
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 1,451 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 196  
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 196 195
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 196  
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 196 190
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 2,598  
Available for Sale, Amortized Cost, Due after ten years 29,679  
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 32,277 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 2,446  
Available for Sale, Fair Value, Due after ten years 28,193  
Debt Securities, Available-for-Sale, Excluding Accrued Interest 30,639 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 63,176  
Held to Maturity, Amortized Cost, Due after five to ten years 17,779  
Held to Maturity, Amortized Cost, Due after ten years 356,597  
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 60,049  
Held to Maturity, Fair Value, Due after five to ten years 16,183  
Held to Maturity, Fair Value, Due after ten years 304,111  
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss 437,552 477,517
Held to Maturity, Fair Value, Total 380,343 407,911
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 16  
Available for Sale, Amortized Cost, Due after one year to five years 139,183  
Available for Sale, Amortized Cost, Due after five to ten years 71,034  
Available for Sale, Amortized Cost, Due after ten years 136,698  
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss 346,931 314,269
Available for Sale, Fair Value    
Available for Sale, Fair Value, Due in one year or less 16  
Available for Sale, Fair Value, Due after one year to five years 128,734  
Available for Sale, Fair Value, Due after five to ten years 66,751  
Available for Sale, Fair Value, Due after ten years 122,208  
Debt Securities, Available-for-Sale, Excluding Accrued Interest 317,709 277,047
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 463,840  
Held to Maturity, Amortized Cost, Due after five to ten years 158,938  
Held to Maturity, Amortized Cost, Due after ten years 176,141  
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 441,693  
Held to Maturity, Fair Value, Due after five to ten years 142,894  
Held to Maturity, Fair Value, Due after ten years 166,932  
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss 798,919 829,431
Held to Maturity, Fair Value, Total 751,519 763,728
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 196,815  
Available for Sale, Amortized Cost, Due after one year to five years 478,105  
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 674,920 824,597
Available for Sale, Fair Value    
Available for Sale, Fair Value, Due in one year or less 192,493  
Available for Sale, Fair Value, Due after one year to five years 448,420  
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 640,913 769,102
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 99,779  
Held to Maturity, Amortized Cost, Due after five to ten years 993  
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 93,334  
Held to Maturity, Fair Value, Due after five to ten years 856  
Held to Maturity, Fair Value, Due after ten years 0  
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss 100,772 100,712
Held to Maturity, Fair Value, Total $ 94,190 $ 91,535