Investment Securities (Investments' Gross Unrealized Losses And Fair Value) (Details) (USD $) | Jun. 30, 2014 | Dec. 31, 2013 |
In Thousands, unless otherwise specified |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | $82,471 | $335,030 |
Securities available for sale, Less than 12 months, Unrealized Losses | 207 | 14,778 |
Securities available for sale, 12 months or longer, Fair Value | 236,297 | 50,928 |
Securities available for sale, 12 months or longer, Unrealized Losses | 7,913 | 2,818 |
Securities available for sale, Fair Value, Total | 318,768 | 385,958 |
Securities available for sale, Unrealized Losses, Total | 8,120 | 17,596 |
Securities held to maturity, Less than 12 months, Fair Value | 95,756 | 407,299 |
Securities held to maturity, Less than 12 months, Unrealized Losses | 285 | 15,246 |
Securities held to maturity, 12 months or longer, Fair Value | 236,297 | 50,928 |
Securities held to maturity, 12 months or longer, Unrealized Losses | 7,913 | 2,818 |
Securities held to maturity, Fair Value, Total | 332,053 | 458,227 |
Securities held to maturity, Unrealized Losses, Total | 8,198 | 18,064 |
U.S. Government Agencies And Government Sponsored Enterprises [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 30,830 | 86,177 |
Securities available for sale, Less than 12 months, Unrealized Losses | 2 | 2,788 |
Securities available for sale, 12 months or longer, Fair Value | 41,159 | 2,717 |
Securities available for sale, 12 months or longer, Unrealized Losses | 1,048 | 14 |
Securities available for sale, Fair Value, Total | 71,989 | 88,894 |
Securities available for sale, Unrealized Losses, Total | 1,050 | 2,802 |
State And Political Subdivisions [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities held to maturity, Less than 12 months, Fair Value | 13,285 | 72,269 |
Securities held to maturity, Less than 12 months, Unrealized Losses | 78 | 468 |
Securities held to maturity, Fair Value, Total | 13,285 | 72,269 |
Securities held to maturity, Unrealized Losses, Total | 78 | 468 |
Mortgage-Backed Securities [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 51,641 | 248,853 |
Securities available for sale, Less than 12 months, Unrealized Losses | 205 | 11,990 |
Securities available for sale, 12 months or longer, Fair Value | 195,138 | 48,211 |
Securities available for sale, 12 months or longer, Unrealized Losses | 6,865 | 2,804 |
Securities available for sale, Fair Value, Total | 246,779 | 297,064 |
Securities available for sale, Unrealized Losses, Total | 7,070 | 14,794 |
Mortgage-Backed Securities [Member] | Federal National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 34,572 | 103,778 |
Securities available for sale, Less than 12 months, Unrealized Losses | 107 | 3,491 |
Securities available for sale, 12 months or longer, Fair Value | 64,582 | 20,689 |
Securities available for sale, 12 months or longer, Unrealized Losses | 2,110 | 1,319 |
Securities available for sale, Fair Value, Total | 99,154 | 124,467 |
Securities available for sale, Unrealized Losses, Total | 2,217 | 4,810 |
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 | 3,750 | ' |
Securities available for sale, 12 months or longer, Unrealized Losses | 10 | ' |
Securities available for sale, Fair Value, Total | 3,750 | 14,166 |
Securities available for sale, Unrealized Losses, Total | 10 | 205 |
Mortgage-Backed Securities [Member] | Government National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 5,440 | 14,226 |
Securities available for sale, Less than 12 months, Unrealized Losses | 54 | 142 |
Securities available for sale, Fair Value, Total | 5,440 | 14,226 |
Securities available for sale, Unrealized Losses, Total | 54 | 142 |
Collateralized Mortgage Obligations [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 11,629 | 116,683 |
Securities available for sale, Less than 12 months, Unrealized Losses | 44 | 8,152 |
Securities available for sale, 12 months or longer, Fair Value | 126,806 | 27,522 |
Securities available for sale, 12 months or longer, Unrealized Losses | 4,745 | 1,485 |
Securities available for sale, Fair Value, Total | 138,435 | 144,205 |
Securities available for sale, Unrealized Losses, Total | 4,789 | 9,637 |
Collateralized Mortgage Obligations [Member] | Federal National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | 9,010 | 35,632 |
Securities available for sale, Less than 12 months, Unrealized Losses | 22 | 2,586 |
Securities available for sale, 12 months or longer, Fair Value | 37,314 | 11,760 |
Securities available for sale, 12 months or longer, Unrealized Losses | 1,405 | 609 |
Securities available for sale, Fair Value, Total | 46,324 | 47,392 |
Securities available for sale, Unrealized Losses, Total | 1,427 | 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 | 2,619 | 72,655 |
Securities available for sale, Less than 12 months, Unrealized Losses | 22 | 4,980 |
Securities available for sale, 12 months or longer, Fair Value | 83,809 | 15,762 |
Securities available for sale, 12 months or longer, Unrealized Losses | 3,267 | 876 |
Securities available for sale, Fair Value, Total | 86,428 | 88,417 |
Securities available for sale, Unrealized Losses, Total | 3,289 | 5,856 |
Collateralized Mortgage Obligations [Member] | Government National Mortgage Association [Member] | ' | ' |
Investment [Line Items] | ' | ' |
Securities available for sale, Less than 12 months, Fair Value | ' | 8,396 |
Securities available for sale, Less than 12 months, Unrealized Losses | ' | 586 |
Securities available for sale, 12 months or longer, Fair Value | 5,683 | ' |
Securities available for sale, 12 months or longer, Unrealized Losses | 73 | ' |
Securities available for sale, Fair Value, Total | 5,683 | 8,396 |
Securities available for sale, Unrealized Losses, Total | $73 | $586 |