Fair Value (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	$ 261,919,000	$ 189,728,000
Investments, Fair Value Disclosure	6,855,000	7,000,000
Mortgage loans held for sale	2,100,000
Mortgage IRLCs	77,000	46,000
Investment securities	1,714,440,000	1,733,696,000
Loans Held-for-sale, Fair Value Disclosure	2,076,000	2,149,000
Impaired Loan Fair Value	3,068,000	5,773,000
Other Assets, Fair Value Disclosure	6,887,490,000	6,918,326,000
Loans Receivable, Fair Value Disclosure	6,892,711,000	6,926,294,000
Time deposits	531,277,000	552,443,000
Other Liabilities, Fair Value Disclosure	2,630,000	1,325,000
Deposits, Fair Value Disclosure	533,907,000	553,768,000
Short Term Borrowings Fair Value	172,058,000	227,342,000
Subordinated Debt Obligations, Fair Value Disclosure	179,251,000	177,928,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	261,919,000	189,728,000
Mortgage IRLCs	0	0
Other Liabilities, Fair Value Disclosure	2,630,000	1,325,000
Deposits, Fair Value Disclosure	2,630,000	1,325,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	77,000	46,000
Investment securities	1,707,585,000	1,726,696,000
Loans Held-for-sale, Fair Value Disclosure	2,076,000	2,149,000
Loans Receivable, Fair Value Disclosure	2,153,000	2,195,000
Time deposits	531,277,000	552,443,000
Deposits, Fair Value Disclosure	531,277,000	552,443,000
Short Term Borrowings Fair Value	172,058,000	227,342,000
Subordinated Debt Obligations, Fair Value Disclosure	179,251,000	177,928,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	0	0
Investment securities	6,855,000	7,000,000
Impaired Loan Fair Value	3,068,000	5,773,000
Other Assets, Fair Value Disclosure	6,887,490,000	6,918,326,000
Loans Receivable, Fair Value Disclosure	6,890,558,000	6,924,099,000
Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	2,076,000	2,149,000
Mortgage IRLCs	77,000	46,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	2,076,000	2,149,000
Mortgage IRLCs	77,000	46,000
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	412,006,000	406,711,000
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	412,006,000	406,711,000
U S Government Sponsored Entities Asset Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	730,261,000	756,761,000
U S Government Sponsored Entities Asset Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	730,261,000	756,761,000
Loans Receivable [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	1,119,000	1,508,000
Loans Receivable [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	0	0
Loans Receivable [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	1,119,000	1,508,000
Swap	1,119,000	1,508,000
Loans Receivable [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	0	0
Loans Receivable [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	1,119,000	1,508,000
Swap	1,119,000	1,508,000
Loans Receivable [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	1,119,000	1,508,000
Swap	1,119,000	1,508,000
Equity Securities [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	2,832,000	1,859,000
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	2,383,000	1,420,000
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	449,000	439,000
Equity Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	2,832,000	1,859,000
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	2,383,000	1,420,000
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	449,000	439,000
Swap [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	121,000	243,000
Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	121,000	243,000
Swap [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	121,000	243,000
Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	121,000	243,000
Corporate Debt Securities
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	15,401,000	16,472,000
Corporate Debt Securities | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	8,546,000	9,472,000
Collateralized Loan Obligations | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	519,428,000	516,539,000
Collateralized Loan Obligations | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	519,428,000	516,539,000
US Government Corporations and Agencies Securities | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	37,344,000	37,213,000
US Government Corporations and Agencies Securities | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	37,344,000	37,213,000
Reported Value Measurement [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	261,919,000	189,728,000
Mortgage IRLCs	77,000	46,000
Investment securities	1,714,440,000	1,733,696,000
Loans Held-for-sale, Fair Value Disclosure	2,076,000	2,149,000
Impaired Loan Fair Value	3,068,000	5,773,000
Other Assets, Fair Value Disclosure	7,002,690,000	7,048,544,000
Loans Receivable, Fair Value Disclosure	7,007,911,000	7,056,512,000
Time deposits	531,850,000	554,445,000
Other Liabilities, Fair Value Disclosure	2,630,000	1,325,000
Deposits, Fair Value Disclosure	534,480,000	555,770,000
Short Term Borrowings Fair Value	172,058,000	227,342,000
Subordinated Debt Obligations, Fair Value Disclosure	188,785,000	188,667,000
Reported Value Measurement [Member] | Loans Receivable [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	1,119,000	1,508,000
Swap	1,119,000	1,508,000
Reported Value Measurement [Member] | Equity Securities [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	2,832,000	1,859,000
Reported Value Measurement [Member] | Swap [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	$ 121,000	$ 243,000