Fair Value (Fair Value Of Financial Instruments) (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	$ 230,397,000	$ 189,728,000
Investment securities	1,668,864,000	1,733,696,000
Loans Held-for-sale, Fair Value Disclosure	3,486,000	2,149,000
Derivative Assets	41,000	46,000
Impaired Loan Fair Value	2,957,000	5,773,000
Other loans	6,976,485,000	6,918,326,000
Loans receivable, net	6,982,969,000	6,926,294,000
Time deposits	565,342,000	552,443,000
Other	3,874,000	1,325,000
Total deposits	569,216,000	553,768,000
Short-term borrowings	143,914,000	227,342,000
Subordinated debentures/notes	169,529,000	177,928,000
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	41,000	46,000
Impaired Loan Fair Value		5,773,000
Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	1,390,000	1,508,000
Loans [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	1,390,000	1,508,000
Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	2,720,000	1,859,000
Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	296,000	243,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	230,397,000	189,728,000
Derivative Assets	0	0
Other	3,874,000	1,325,000
Total deposits	3,874,000	1,325,000
Fair Value, Inputs, Level 1 [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	0	0
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	2,265,000	1,420,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,662,748,000	1,726,696,000
Loans Held-for-sale, Fair Value Disclosure	3,486,000	2,149,000
Derivative Assets	41,000	46,000
Loans receivable, net	3,527,000	2,195,000
Time deposits	565,342,000	552,443,000
Total deposits	565,342,000	552,443,000
Short-term borrowings	143,914,000	227,342,000
Subordinated debentures/notes	169,529,000	177,928,000
Fair Value, Inputs, Level 2 [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	1,390,000	1,508,000
Swap	1,390,000	1,508,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	6,116,000	7,000,000
Derivative Assets	0	0
Impaired Loan Fair Value	2,957,000	5,773,000
Other loans	6,976,485,000	6,918,326,000
Loans receivable, net	6,979,442,000	6,924,099,000
Fair Value, Inputs, Level 3 [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	0	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	455,000	439,000
Fair Value, Inputs, Level 3 [Member] | Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	$ 296,000	$ 243,000