Fair Value Accounting and Measurement (Financial Assets And Liabilities Accounted for Fair Value On Recurring Basis) (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		$ 4,589,099	$ 5,910,999
Loans held for sale - Fair value option	[1]	907	9,570
Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		4,589,099	5,910,999
Loans held for sale - Fair value option		907	9,570
Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		167,896	157,536
Loans held for sale - Fair value option		0	0
Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		4,421,203	5,753,463
Loans held for sale - Fair value option		907	9,570
Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
Loans held for sale - Fair value option		0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		2,759,710	3,745,601
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		2,759,710	3,745,601
U.S. Government Agency and Sponsored Enterprise Mortgage-Back Securities and Collateralized Mortgage Obligations | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
Asset-backed Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		327,353	463,063
Asset-backed Securities | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		327,353	463,063
Asset-backed Securities | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
Asset-backed Securities | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		327,353	463,063
Asset-backed Securities | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
State and Municipal Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		834,073	997,291
State and Municipal Securities | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		834,073	997,291
State and Municipal Securities | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
State and Municipal Securities | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		834,073	997,291
State and Municipal Securities | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
U.S. Government Agency and government-sponsored enterprise securities | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		208,769	252,576
U.S. Government Agency and government-sponsored enterprise securities | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
U.S. Government Agency and government-sponsored enterprise securities | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		208,769	252,576
U.S. Government Agency and government-sponsored enterprise securities | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
US Government Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		167,896	157,536
US Government Securities | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		167,896	157,536
US Government Securities | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		167,896	157,536
US Government Securities | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
US Government Securities | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
Non-agency collateralized mortgage obligations
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		291,298	294,932
Non-agency collateralized mortgage obligations | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		291,298	294,932
Non-agency collateralized mortgage obligations | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
Non-agency collateralized mortgage obligations | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		291,298	294,932
Non-agency collateralized mortgage obligations | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale		0	0
Interest Rate Lock Commitments | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value			356
Interest Rate Lock Commitments | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value			0
Interest Rate Lock Commitments | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value			0
Interest Rate Lock Commitments | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value			356
Interest Rate Swap | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value		40,289	24,257
Interest rate derivative liabilities, at fair value		40,289	24,257
Interest Rate Swap | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value		0	0
Interest rate derivative liabilities, at fair value		0	0
Interest Rate Swap | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value		40,289	24,257
Interest rate derivative liabilities, at fair value		40,289	24,257
Interest Rate Swap | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate derivative assets, at fair value		0	0
Interest rate derivative liabilities, at fair value		$ 0	0
Forward sales contracts | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Liabilities			27
Forward sales contracts | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Liabilities			0
Forward sales contracts | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Liabilities			27
Forward sales contracts | Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Liabilities			$ 0

[1] Amounts represent loans for which the Company has elected the fair value option. The remaining loans held for sale at December 31, 2022 relate to our pending divestitures and are held at the lower of cost or market value.