Securities (Summary Of Securities Available For Sale In Unrealized Loss Position) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	$ 71,659	$ 49,087
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(861)	(600)
12 months or more, Estimated Fair Value	7,711	32,701
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(109)	(367)
Total Estimated Fair Value	79,370	81,788
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(970)	(967)
Temporarily Impaired Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	71,659	49,087
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(861)	(600)
12 months or more, Estimated Fair Value	7,711	32,701
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(109)	(367)
Total Estimated Fair Value	79,370	81,788
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(970)	(967)
Temporarily Impaired Securities [Member] | U S Government Corporations And Agencies Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
12 months or more, Estimated Fair Value	3,313	3,912
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(37)	(52)
Total Estimated Fair Value	3,313	3,912
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(37)	(52)
Temporarily Impaired Securities [Member] | Government Sponsored Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	32,661	36,825
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(343)	(535)
12 months or more, Estimated Fair Value	4,160	21,915
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(63)	(238)
Total Estimated Fair Value	36,821	58,740
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(406)	(773)
Temporarily Impaired Securities [Member] | Nongovernment Sponsored Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	5,390	5,488
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(27)	(44)
12 months or more, Estimated Fair Value	238	2,163
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(9)	(4)
Total Estimated Fair Value	5,628	7,651
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(36)	(48)
Temporarily Impaired Securities [Member] | State and Political Subdivisions Lottery/Casino Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	1,184
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(29)
12 months or more, Estimated Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Total Estimated Fair Value	1,184
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(29)
Temporarily Impaired Securities [Member] | Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	5,836
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(144)
12 months or more, Estimated Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Total Estimated Fair Value	5,836
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(144)
Temporarily Impaired Securities [Member] | Tax Exempt State and Political Subdivisions General Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	14,889	3,708
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(197)	(8)
12 months or more, Estimated Fair Value	0	438
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(4)
Total Estimated Fair Value	14,889	4,146
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(197)	(12)
Temporarily Impaired Securities [Member] | Tax Exempt State and Political Subdivisions Water and Sewer Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	2,971	721
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(9)	(3)
12 months or more, Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total Estimated Fair Value	2,971	721
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(9)	(3)
Temporarily Impaired Securities [Member] | Tax Exempt State and Political Subdivisions Special Tax Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	2,218
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(55)
12 months or more, Estimated Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Total Estimated Fair Value	2,218
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(55)
Temporarily Impaired Securities [Member] | Tax Exempt State and Political Subdivisions Lottery/casino Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	2,959	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(44)	0
12 months or more, Estimated Fair Value	0	1,126
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(9)
Total Estimated Fair Value	2,959	1,126
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(44)	(9)
Temporarily Impaired Securities [Member] | Tax Exempt State and Political Subdivisions Other Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	1,240	1,247
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(4)	(8)
12 months or more, Estimated Fair Value	0	846
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(10)
Total Estimated Fair Value	1,240	2,093
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	(4)	(18)
Temporarily Impaired Securities [Member] | State and Political Subdivisions General Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
12 months or more, Estimated Fair Value		316
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(33)
Total Estimated Fair Value		316
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		(33)
Temporarily Impaired Securities [Member] | State and Political Subdivisions Water and Sewer Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
12 months or more, Estimated Fair Value		817
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(7)
Total Estimated Fair Value		817
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		(7)
Temporarily Impaired Securities [Member] | State and Political Subdivisions Other Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value		1,098
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(2)
12 months or more, Estimated Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Total Estimated Fair Value		1,098
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		(2)
Temporarily Impaired Securities [Member] | Tax Exempt State and Political Subdivisions Lease Revenues [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
12 months or more, Estimated Fair Value		1,168
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(10)
Total Estimated Fair Value		1,168
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss		(10)
Other Than Temporarily Impaired Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
12 months or more, Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total Estimated Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss	$ 0	$ 0