Investment Securities (Investments' Gross Unrealized Losses And Fair Value) (Details) (USD $) | Sep. 30, 2014 | Dec. 31, 2013 |
In Thousands, unless otherwise specified |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | $109,756 | $335,030 |
Securities available for sale, Less than 12 months, Unrealized Losses | 636 | 14,778 |
Securities available for sale, 12 months or longer, Fair Value | 221,284 | 50,928 |
Securities available for sale, 12 months or longer, Unrealized Losses | 7,988 | 2,818 |
Securities available for sale, Fair Value, Total | 331,040 | 385,958 |
Securities available for sale, Unrealized Losses, Total | 8,624 | 17,596 |
Securities held to maturity, Less than 12 months, Fair Value | 26,657 | ' |
Securities held to maturity, Less than 12 months, Unrealized Losses | 165 | ' |
Securities held to maturity, Fair Value, Total | 26,657 | ' |
Securities held to maturity, Unrealized Losses, Total | 165 | ' |
Total Securities, Less than 12 months, Fair Value | 136,413 | 407,299 |
Total Securities, Less than 12 months, Unrealized Losses | 801 | 15,246 |
Total Securities, 12 months or longer, Fair Value | 221,284 | 50,928 |
Total Securities, 12 months or longer, Unrealized Losses | 7,988 | 2,818 |
Total Securities, Fair Value | 357,697 | 458,227 |
Total Securities, Unrealized Losses | 8,789 | 18,064 |
U.S. Government Agencies And Government Sponsored Enterprises [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 44,780 | 86,177 |
Securities available for sale, Less than 12 months, Unrealized Losses | 299 | 2,788 |
Securities available for sale, 12 months or longer, Fair Value | 40,918 | 2,717 |
Securities available for sale, 12 months or longer, Unrealized Losses | 1,169 | 14 |
Securities available for sale, Fair Value, Total | 85,698 | 88,894 |
Securities available for sale, Unrealized Losses, Total | 1,468 | 2,802 |
State And Political Subdivisions [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities held to maturity, Less than 12 months, Fair Value | 9,504 | 72,269 |
Securities held to maturity, Less than 12 months, Unrealized Losses | 58 | 468 |
Securities held to maturity, Fair Value, Total | 9,504 | 72,269 |
Securities held to maturity, Unrealized Losses, Total | 58 | 468 |
Mortgage-Backed Securities [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 64,976 | 248,853 |
Securities available for sale, Less than 12 months, Unrealized Losses | 337 | 11,990 |
Securities available for sale, 12 months or longer, Fair Value | 180,366 | 48,211 |
Securities available for sale, 12 months or longer, Unrealized Losses | 6,819 | 2,804 |
Securities available for sale, Fair Value, Total | 245,342 | 297,064 |
Securities available for sale, Unrealized Losses, Total | 7,156 | 14,794 |
Mortgage-Backed Securities [Member] | Federal National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 44,078 | 103,778 |
Securities available for sale, Less than 12 months, Unrealized Losses | 208 | 3,491 |
Securities available for sale, 12 months or longer, Fair Value | 64,400 | 20,689 |
Securities available for sale, 12 months or longer, Unrealized Losses | 2,020 | 1,319 |
Securities available for sale, Fair Value, Total | 108,478 | 124,467 |
Securities available for sale, Unrealized Losses, Total | 2,228 | 4,810 |
Securities held to maturity, Less than 12 months, Fair Value | 3,264 | ' |
Securities held to maturity, Less than 12 months, Unrealized Losses | 37 | ' |
Securities held to maturity, Fair Value, Total | 3,264 | ' |
Securities held to maturity, Unrealized Losses, Total | 37 | ' |
Mortgage-Backed Securities [Member] | Federal Home Loan Mortgage Corporation [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | ' | 14,166 |
Securities available for sale, Less than 12 months, Unrealized Losses | ' | 205 |
Securities available for sale, 12 months or longer, Fair Value | 3,478 | ' |
Securities available for sale, 12 months or longer, Unrealized Losses | 42 | ' |
Securities available for sale, Fair Value, Total | 3,478 | 14,166 |
Securities available for sale, Unrealized Losses, Total | 42 | 205 |
Mortgage-Backed Securities [Member] | Government National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | ' | 14,226 |
Securities available for sale, Less than 12 months, Unrealized Losses | ' | 142 |
Securities available for sale, Fair Value, Total | ' | 14,226 |
Securities available for sale, Unrealized Losses, Total | ' | 142 |
Securities held to maturity, Less than 12 months, Fair Value | 13,889 | ' |
Securities held to maturity, Less than 12 months, Unrealized Losses | 70 | ' |
Securities held to maturity, Fair Value, Total | 13,889 | ' |
Securities held to maturity, Unrealized Losses, Total | 70 | ' |
Collateralized Mortgage Obligations [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 20,898 | 116,683 |
Securities available for sale, Less than 12 months, Unrealized Losses | 129 | 8,152 |
Securities available for sale, 12 months or longer, Fair Value | 112,488 | 27,522 |
Securities available for sale, 12 months or longer, Unrealized Losses | 4,757 | 1,485 |
Securities available for sale, Fair Value, Total | 133,386 | 144,205 |
Securities available for sale, Unrealized Losses, Total | 4,886 | 9,637 |
Collateralized Mortgage Obligations [Member] | Federal National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 18,649 | 35,632 |
Securities available for sale, Less than 12 months, Unrealized Losses | 121 | 2,586 |
Securities available for sale, 12 months or longer, Fair Value | 29,146 | 11,760 |
Securities available for sale, 12 months or longer, Unrealized Losses | 1,237 | 609 |
Securities available for sale, Fair Value, Total | 47,795 | 47,392 |
Securities available for sale, Unrealized Losses, Total | 1,358 | 3,195 |
Collateralized Mortgage Obligations [Member] | Federal Home Loan Mortgage Corporation [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | ' | 72,655 |
Securities available for sale, Less than 12 months, Unrealized Losses | ' | 4,980 |
Securities available for sale, 12 months or longer, Fair Value | 77,992 | 15,762 |
Securities available for sale, 12 months or longer, Unrealized Losses | 3,418 | 876 |
Securities available for sale, Fair Value, Total | 77,992 | 88,417 |
Securities available for sale, Unrealized Losses, Total | 3,418 | 5,856 |
Collateralized Mortgage Obligations [Member] | Government National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 2,249 | 8,396 |
Securities available for sale, Less than 12 months, Unrealized Losses | 8 | 586 |
Securities available for sale, 12 months or longer, Fair Value | 5,350 | ' |
Securities available for sale, 12 months or longer, Unrealized Losses | 102 | ' |
Securities available for sale, Fair Value, Total | 7,599 | 8,396 |
Securities available for sale, Unrealized Losses, Total | $110 | $586 |