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Investment Securities (Investments' Gross Unrealized Losses And Fair Value) (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | $ 103,863 | $ 51,852
Securities available for sale, Less than 12 months, Unrealized Losses | 783 | 116
Securities available for sale, 12 months or longer, Fair Value | 36,408 | 207,942
Securities available for sale, 12 months or longer, Unrealized Losses | 123 | 5,699
Securities available for sale, Fair Value, Total | 140,271 | 259,794
Securities available for sale, Unrealized Losses, Total | 906 | 5,815
Securities held to maturity, Less than 12 months, Fair Value | 22,242 |
Securities held to maturity, Less than 12 months, Unrealized Losses | 190 |
Securities held to maturity, Fair Value, Total | 22,242 |
Securities held to maturity, Unrealized Losses, Total | 190 | 120
Total Securities, Less than 12 months, Fair Value | 126,105 | 69,888
Total Securities, Less than 12 months, Unrealized Losses | 973 | 236
Total Securities, 12 months or longer, Fair Value | 36,408 | 207,942
Total Securities, 12 months or longer, Unrealized Losses | 123 | 5,699
Total Securities, Fair Value | 162,513 | 277,830
Total Securities, Unrealized Losses | 1,096 | 5,935
U.S. Government Agencies And Government Sponsored Enterprises [Member] |  |
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | 52,180 | 34,995
Securities available for sale, Less than 12 months, Unrealized Losses | 268 | 77
Securities available for sale, 12 months or longer, Fair Value | 26,640 | 41,070
Securities available for sale, 12 months or longer, Unrealized Losses | 83 | 898
Securities available for sale, Fair Value, Total | 78,820 | 76,065
Securities available for sale, Unrealized Losses, Total | 351 | 975
State And Political Subdivisions [Member] |  |
Investment [Line Items] |  |
Securities held to maturity, Less than 12 months, Fair Value | 11,985 | 18,036
Securities held to maturity, Less than 12 months, Unrealized Losses | 70 | 120
Securities held to maturity, Fair Value, Total | 11,985 | 18,036
Securities held to maturity, Unrealized Losses, Total | 70 | 120
Mortgage-Backed Securities [Member] |  |
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | 51,683 | 16,857
Securities available for sale, Less than 12 months, Unrealized Losses | 515 | 39
Securities available for sale, 12 months or longer, Fair Value | 9,768 | 166,872
Securities available for sale, 12 months or longer, Unrealized Losses | 40 | 4,801
Securities available for sale, Fair Value, Total | 61,451 | 183,729
Securities available for sale, Unrealized Losses, Total | 555 | 4,840
Securities held to maturity, Less than 12 months, Fair Value | 10,257 |
Securities held to maturity, Less than 12 months, Unrealized Losses | 120 |
Securities held to maturity, Fair Value, Total | 10,257 |
Securities held to maturity, Unrealized Losses, Total | 120 |
Mortgage-Backed Securities [Member] | Federal National Mortgage Association [Member] |  |
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | 36,563 | 2,242
Securities available for sale, Less than 12 months, Unrealized Losses | 428 | 8
Securities available for sale, 12 months or longer, Fair Value | 9,768 | 62,592
Securities available for sale, 12 months or longer, Unrealized Losses | 40 | 1,256
Securities available for sale, Fair Value, Total | 46,331 | 64,834
Securities available for sale, Unrealized Losses, Total | 468 | 1,264
Securities held to maturity, Less than 12 months, Fair Value | 1,369 |
Securities held to maturity, Less than 12 months, Unrealized Losses | 11 |
Securities held to maturity, Fair Value, Total | 1,369 |
Securities held to maturity, Unrealized Losses, Total | 11 |
Mortgage-Backed Securities [Member] | Federal Home Loan Mortgage Corporation [Member] |  |
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | 5,967 | 3,387
Securities available for sale, Less than 12 months, Unrealized Losses | 73 | 7
Securities available for sale, Fair Value, Total | 5,967 | 3,387
Securities available for sale, Unrealized Losses, Total | 73 | 7
Mortgage-Backed Securities [Member] | Government National Mortgage Association [Member] |  |
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | 1,525 |
Securities available for sale, Less than 12 months, Unrealized Losses | 3 |
Securities available for sale, Fair Value, Total | 1,525 |
Securities available for sale, Unrealized Losses, Total | 3 |
Securities held to maturity, Less than 12 months, Fair Value | 8,888 |
Securities held to maturity, Less than 12 months, Unrealized Losses | 109 |
Securities held to maturity, Fair Value, Total | 8,888 |
Securities held to maturity, Unrealized Losses, Total | 109 |
Collateralized Mortgage Obligations [Member] | Federal National Mortgage Association [Member] |  |
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | 2,542 | 11,228
Securities available for sale, Less than 12 months, Unrealized Losses | 5 | 24
Securities available for sale, 12 months or longer, Fair Value |  | 25,644
Securities available for sale, 12 months or longer, Unrealized Losses |  | 920
Securities available for sale, Fair Value, Total | 2,542 | 36,872
Securities available for sale, Unrealized Losses, Total | 5 | 944
Collateralized Mortgage Obligations [Member] | Federal Home Loan Mortgage Corporation [Member] |  |
Investment [Line Items] |  |
Securities available for sale, Less than 12 months, Fair Value | 5,086 |
Securities available for sale, Less than 12 months, Unrealized Losses | 6 |
Securities available for sale, 12 months or longer, Fair Value |  | 76,126
Securities available for sale, 12 months or longer, Unrealized Losses |  | 2,585
Securities available for sale, Fair Value, Total | 5,086 | 76,126
Securities available for sale, Unrealized Losses, Total | $ 6 | 2,585
Collateralized Mortgage Obligations [Member] | Government National Mortgage Association [Member] |  |
Investment [Line Items] |  |
Securities available for sale, 12 months or longer, Fair Value |  | 2,510
Securities available for sale, 12 months or longer, Unrealized Losses |  | 40
Securities available for sale, Fair Value, Total |  | 2,510
Securities available for sale, Unrealized Losses, Total |  | $ 40

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