Fair Value Measurements (Carrying Values And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale, net	$ 220	$ 176
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	51,214	46,616
AvailableForSaleSecuritiesFairValueDisclosure1	328,726	266,542
Other investments	12,170	12,942
Loans held for sale, net	220	176
Loans, net	1,559,328	1,307,862
Accrued interest receivable	7,979	6,167
Derivative Asset	125	200
Total assets	1,959,762	1,640,505
Deposits	1,616,768	1,295,519
Short-term borrowings	202,988	224,461
Long-term borrowings	45,755	46,670
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	912	736
Derivative financial liabilities	3,056	4,611
Total liabilities	1,889,068	1,591,586
Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	51,214	46,616
AvailableForSaleSecuritiesFairValueDisclosure1	328,726	266,542
Other investments	12,170	12,942
Loans held for sale, net	220	176
Loans, net	1,557,227	1,321,235
Accrued interest receivable	7,979	6,167
Derivative Asset	125	200
Total assets	1,957,661	1,653,878
Deposits	1,637,258	1,309,820
Short-term borrowings	202,988	224,461
Long-term borrowings	46,962	49,013
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	912	736
Derivative financial liabilities	3,056	4,611
Total liabilities	1,910,765	1,608,230
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	220	176
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	51,214	46,616
AvailableForSaleSecuritiesFairValueDisclosure1	328,726	266,542
Other investments	12,170	12,942
Loans held for sale, net	220	176
Loans, net	1,666	1,075
Accrued interest receivable	7,979	6,167
Derivative Asset	125	200
Total assets	402,100	333,718
Deposits	1,637,258	1,309,820
Short-term borrowings	202,988	224,461
Long-term borrowings	46,962	49,013
Subordinated debentures owed to unconsolidated subsidiary trusts	19,589	19,589
Accrued interest payable	912	736
Derivative financial liabilities	3,056	4,611
Total liabilities	1,910,765	1,608,230
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	1,555,561	1,320,160
Accrued interest receivable	0	0
Derivative Asset	0	0
Total assets	1,555,561	1,320,160
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