Securities (Schedule of Contractual Maturities of Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
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	$ 1,605,913	$ 1,583,736
Available for Sale, Fair Value
Debt Securities, Available-for-Sale, Excluding Accrued Interest	1,425,511	1,571,148
Held to Maturity, Fair Value
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	1,697,635	1,066,818
Held to Maturity, Fair Value, Total	1,509,985	1,064,133
Available for Sale Securities and Held to Maturity Securities Amortized Cost	3,303,548
Debt Securities, Available-for-sale and Held-to-maturity	2,935,496
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	19,886
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	19,843
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost	1,132,668
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value	1,039,617
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	1,061,045
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	915,523
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Amortized Cost	1,089,949
Debt Securities, Available-for-sale and Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Ten Years, Fair Value	960,513
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	68,007
Available for Sale, Amortized Cost, Due after five to ten years	163,115
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	231,122	217,393
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	60,786
Available for Sale, Fair Value, Due after five to ten years	139,156
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	199,942	215,482
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	31,696
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	29,303
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	31,696	32,987
Held to Maturity, Fair Value, Total	29,303	32,546
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	62,048
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	62,048	47,075
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	54,496
Debt Securities, Available-for-Sale, Excluding Accrued Interest	54,496	48,914
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	0
Held to Maturity, Amortized Cost, Due after ten years	117,727
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	0
Held to Maturity, Fair Value, Due after ten years	112,119
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	117,727	21,023
Held to Maturity, Fair Value, Total	112,119	21,756
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	19,658
Available for Sale, Amortized Cost, Due after one year to five years	830,875
Available for Sale, Amortized Cost, Due after five to ten years	493,790
Available for Sale, Amortized Cost, Due after ten years	261,590
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	19,617
Available for Sale, Fair Value, Due after one year to five years	755,576
Available for Sale, Fair Value, Due after five to ten years	422,453
Available for Sale, Fair Value, Due after ten years	227,865
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	228
Held to Maturity, Amortized Cost, Due after one year to five years	301,793
Held to Maturity, Amortized Cost, Due after five to ten years	567,255
Held to Maturity, Amortized Cost, Due after ten years	828,359
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	226
Held to Maturity, Fair Value, Due after one year to five years	284,041
Held to Maturity, Fair Value, Due after five to ten years	493,070
Held to Maturity, Fair Value, Due after ten years	732,648
Held to Maturity, Fair Value, Total	1,509,985
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	1,202
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	1,202	1,199
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	999
Debt Securities, Available-for-Sale, Excluding Accrued Interest	999	1,000
Single Issuer Trust Preferred Securities Issued by Banks and Insurers [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	489
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	489	489
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	489
Debt Securities, Available-for-Sale, Excluding Accrued Interest	489	491
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	1,500
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	0
Held to Maturity, Fair Value, Due after five to ten years	1,508
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	1,508	1,508
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	193
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	193	192
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	187
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	187	203
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	0
Available for Sale, Amortized Cost, Due after ten years	43,672
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	43,672	78,966
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	40,787
Debt Securities, Available-for-Sale, Excluding Accrued Interest	40,787	79,677
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	29,998
Held to Maturity, Amortized Cost, Due after five to ten years	36,791
Held to Maturity, Amortized Cost, Due after ten years	487,206
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	28,550
Held to Maturity, Fair Value, Due after five to ten years	31,784
Held to Maturity, Fair Value, Due after ten years	416,636
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	553,995	415,736
Held to Maturity, Fair Value, Total	476,970	408,845
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	19,658
Available for Sale, Amortized Cost, Due after one year to five years	70,984
Available for Sale, Amortized Cost, Due after five to ten years	148,475
Available for Sale, Amortized Cost, Due after ten years	154,179
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, before Allowance for Credit Loss	393,296	364,955
Available for Sale, Fair Value
Available for Sale, Fair Value, Due in one year or less	19,617
Available for Sale, Fair Value, Due after one year to five years	66,817
Available for Sale, Fair Value, Due after five to ten years	126,625
Available for Sale, Fair Value, Due after ten years	131,094
Debt Securities, Available-for-Sale, Excluding Accrued Interest	344,153	363,933
Held to Maturity, Amortized Cost
Held to Maturity, Amortized Cost, Due in one year or less	228
Held to Maturity, Amortized Cost, Due after one year to five years	190,333
Held to Maturity, Amortized Cost, Due after five to ten years	478,115
Held to Maturity, Amortized Cost, Due after ten years	223,426
Held to Maturity, Fair Value
Held to Maturity, Fair Value, Due in one year or less	226
Held to Maturity, Fair Value, Due after one year to five years	182,141
Held to Maturity, Fair Value, Due after five to ten years	415,833
Held to Maturity, Fair Value, Due after ten years	203,893
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	892,102	493,012
Held to Maturity, Fair Value, Total	802,093	497,236
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	0
Available for Sale, Amortized Cost, Due after one year to five years	691,691
Available for Sale, Amortized Cost, Due after five to ten years	182,200
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	873,891	873,467
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	627,786
Available for Sale, Fair Value, Due after five to ten years	156,672
Available for Sale, Fair Value, Due after ten years	0
Debt Securities, Available-for-Sale, Excluding Accrued Interest	784,458	861,448
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	49,766
Held to Maturity, Amortized Cost, Due after five to ten years	50,849
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	44,047
Held to Maturity, Fair Value, Due after five to ten years	43,945
Held to Maturity, Fair Value, Due after ten years	0
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, before Allowance for Credit Loss	100,615	102,560
Held to Maturity, Fair Value, Total	$ 87,992	$ 102,242