Fair Value Measurements (Carrying Values And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, net	$ 221	$ 0
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	47,407	52,631
AvailableForSaleSecuritiesFairValueDisclosure1	296,890	328,723
Other investments	13,018	14,934
Loans held for sale, net	221	0
Loans, net	1,631,150	1,593,744
Accrued interest receivable	8,346	8,329
Derivative Asset	764	312
Total assets	1,997,796	1,998,673
Deposits	1,654,523	1,600,601
Short-term borrowings	193,513	250,499
Long-term borrowings	45,747	45,751
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	982	987
Derivative financial liabilities	1,116	2,057
Total liabilities	1,915,470	1,919,484
Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	47,407	52,631
AvailableForSaleSecuritiesFairValueDisclosure1	296,890	328,723
Other investments	13,018	14,934
Loans held for sale, net	221	0
Loans, net	1,616,759	1,592,821
Accrued interest receivable	8,346	8,329
Derivative Asset	764	312
Total assets	1,983,405	1,997,750
Deposits	1,676,651	1,620,033
Short-term borrowings	193,513	250,499
Long-term borrowings	46,096	46,530
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	982	987
Derivative financial liabilities	1,116	2,057
Total liabilities	1,937,947	1,939,695
Fair Value Inputs Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, net	0	0
Fair Value Inputs Level 1 [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
AvailableForSaleSecuritiesFairValueDisclosure1	0	0
Other investments	0	0
Loans held for sale, net	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Derivative Asset	0	0
Total assets	0	0
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Subordinated debentures owed to unconsolidated subsidiary trusts	0	0
Accrued interest payable	0	0
Derivative financial liabilities	0	0
Total liabilities	0	0
Fair Value Inputs Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, net	221	0
Fair Value Inputs Level 2 [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	47,407	52,631
AvailableForSaleSecuritiesFairValueDisclosure1	296,890	328,723
Other investments	13,018	14,934
Loans held for sale, net	221	0
Loans, net	1,144	1,661
Accrued interest receivable	8,346	8,329
Derivative Asset	764	312
Total assets	367,790	406,590
Deposits	1,676,651	1,620,033
Short-term borrowings	193,513	250,499
Long-term borrowings	46,096	46,530
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	982	987
Derivative financial liabilities	1,116	2,057
Total liabilities	1,937,947	1,939,695
Fair Value Inputs Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, net	0	0
Fair Value Inputs Level 3 [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
AvailableForSaleSecuritiesFairValueDisclosure1	0	0
Other investments	0	0
Loans held for sale, net	0	0
Loans, net	1,615,615	1,591,160
Accrued interest receivable	0	0
Derivative Asset	0	0
Total assets	1,615,615	1,591,160
Deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Subordinated debentures owed to unconsolidated subsidiary trusts	0	0
Accrued interest payable	0	0
Derivative financial liabilities	0	0
Total liabilities	$ 0	$ 0