Investment Securities (Available-for-sale And Held-to-maturity Securities, Continuous Unrealized Loss Position) (Details) (USD $) | Mar. 31, 2014 | Dec. 31, 2013 |
In Thousands, unless otherwise specified | security | security |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 313 | 459 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | $394,284 | $592,970 |
12 months or longer, Fair Value | 108,523 | 67,734 |
Total, Fair Value | 502,807 | 660,704 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | -2,996 | -6,443 |
12 months or longer, Unrealized losses | -969 | -866 |
Total, Unrealized losses | -3,965 | -7,309 |
Held-to-maturity, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 2 | 2 |
Held-to-maturity, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
12 months or longer, Fair Value | 7,914 | 7,887 |
Total, Fair Value | 7,914 | 7,887 |
Held-to-maturity, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
12 months or longer, Unrealized losses | -4,199 | -4,222 |
Total, Unrealized losses | -4,199 | -4,222 |
U.S. Government Agency Securities [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 1 | ' |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | 1,835 | ' |
Total, Fair Value | 1,835 | ' |
Federally Insured Student Loan Securities [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 3 | 4 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | 10,078 | 3,300 |
12 months or longer, Fair Value | 11,985 | ' |
Total, Fair Value | 22,063 | 3,300 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | -73 | ' |
12 months or longer, Unrealized losses | -24 | ' |
Total, Unrealized losses | -97 | ' |
Tax-exempt Obligations Of States And Political Subdivisions [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 143 | 9 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | 83,257 | 50,498 |
12 months or longer, Fair Value | 26,576 | 6,202 |
Total, Fair Value | 109,833 | 56,700 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | -516 | -676 |
12 months or longer, Unrealized losses | -204 | -44 |
Total, Unrealized losses | -720 | -720 |
Taxable Obligations Of States And Political Subdivisions [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 30 | 229 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | 28,983 | 169,995 |
12 months or longer, Fair Value | 5,280 | ' |
Total, Fair Value | 34,263 | 169,995 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | -275 | -1,951 |
12 months or longer, Unrealized losses | -84 | ' |
Total, Unrealized losses | -359 | -1,951 |
Residential Mortgage-backed Securities [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 37 | 52 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | 111,016 | 46,888 |
12 months or longer, Fair Value | 57,860 | 1,808 |
Total, Fair Value | 168,876 | 48,696 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | -1,026 | -737 |
12 months or longer, Unrealized losses | -597 | -9 |
Total, Unrealized losses | -1,623 | -746 |
Commercial Mortgage-backed Securities [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 28 | 38 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | 92,635 | 147,717 |
12 months or longer, Fair Value | 2,645 | 55,064 |
Total, Fair Value | 95,280 | 202,781 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | -489 | -1,656 |
12 months or longer, Unrealized losses | -23 | -606 |
Total, Unrealized losses | -512 | -2,262 |
Corporate And Other Debt Securities [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 71 | 26 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | 66,480 | 76,668 |
12 months or longer, Fair Value | 4,177 | 405 |
Total, Fair Value | 70,657 | 77,073 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | -617 | -399 |
12 months or longer, Unrealized losses | -37 | -11 |
Total, Unrealized losses | -654 | -410 |
Other Equity Securities [Member] | ' | ' |
Available-for-sale, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | ' | 101 |
Available-for-sale, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
Less than 12 months, Fair Value | ' | 97,904 |
12 months or longer, Fair Value | ' | 4,255 |
Total, Fair Value | ' | 102,159 |
Available-for-sale, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
Less than 12 months, Unrealized losses | ' | -1,024 |
12 months or longer, Unrealized losses | ' | -196 |
Total, Unrealized losses | ' | -1,220 |
Single Issuers [Member] | ' | ' |
Held-to-maturity, continuous unrealized loss position [Abstract] | ' | ' |
Number of securities | 2 | 2 |
Held-to-maturity, continuous unrealized loss position, Fair Value [Abstract] | ' | ' |
12 months or longer, Fair Value | 7,914 | 7,887 |
Total, Fair Value | 7,914 | 7,887 |
Held-to-maturity, continuous unrealized loss position, Unrealized losses [Abstract] | ' | ' |
12 months or longer, Unrealized losses | -4,199 | -4,222 |
Total, Unrealized losses | ($4,199) | ($4,222) |