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Allowance For Loan And Lease Losses (Summary Of Activity In Allowance For Loan And Lease Losses) (Details) (USD $)
In Thousands
 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2011
Dec. 31, 2010
Jun. 30, 2010
Jun. 30, 2011
Construction And Land Development - Commercial [Member]
Dec. 31, 2010
Construction And Land Development - Commercial [Member]
Jun. 30, 2011
Construction And Land Development - Commercial [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Construction And Land Development - Commercial [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Construction And Land Development - Commercial [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Construction And Land Development - Commercial [Member]
Covered Loans [Member]
Jun. 30, 2011
Construction And Land Development - Commercial [Member]
Covered Loans [Member]
Dec. 31, 2010
Construction And Land Development - Commercial [Member]
Covered Loans [Member]
Jun. 30, 2011
Commercial Mortgage [Member]
Dec. 31, 2010
Commercial Mortgage [Member]
Jun. 30, 2011
Commercial Mortgage [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Commercial Mortgage [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Commercial Mortgage [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Commercial Mortgage [Member]
Covered Loans [Member]
Jun. 30, 2011
Commercial Mortgage [Member]
Covered Loans [Member]
Dec. 31, 2010
Commercial Mortgage [Member]
Covered Loans [Member]
Jun. 30, 2011
Other Commercial Real Estate [Member]
Dec. 31, 2010
Other Commercial Real Estate [Member]
Jun. 30, 2011
Other Commercial Real Estate [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Other Commercial Real Estate [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Other Commercial Real Estate [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Other Commercial Real Estate [Member]
Covered Loans [Member]
Jun. 30, 2011
Other Commercial Real Estate [Member]
Covered Loans [Member]
Dec. 31, 2010
Other Commercial Real Estate [Member]
Covered Loans [Member]
Jun. 30, 2011
Commercial And Industrial [Member]
Dec. 31, 2010
Commercial And Industrial [Member]
Jun. 30, 2011
Commercial And Industrial [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Commercial And Industrial [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Commercial And Industrial [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Commercial And Industrial [Member]
Covered Loans [Member]
Jun. 30, 2011
Commercial And Industrial [Member]
Covered Loans [Member]
Dec. 31, 2010
Commercial And Industrial [Member]
Covered Loans [Member]
Jun. 30, 2011
Lease Financing [Member]
Dec. 31, 2010
Lease Financing [Member]
Jun. 30, 2011
Lease Financing [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Lease Financing [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Lease Financing [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Lease Financing [Member]
Covered Loans [Member]
Jun. 30, 2011
Other [Member]
Dec. 31, 2010
Other [Member]
Jun. 30, 2011
Other [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Other [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Other [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Residential Mortgage [Member]
Dec. 31, 2010
Residential Mortgage [Member]
Jun. 30, 2011
Residential Mortgage [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Residential Mortgage [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Residential Mortgage [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Residential Mortgage [Member]
Covered Loans [Member]
Jun. 30, 2011
Residential Mortgage [Member]
Covered Loans [Member]
Dec. 31, 2010
Residential Mortgage [Member]
Covered Loans [Member]
Jun. 30, 2011
Revolving Mortgage [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Revolving Mortgage [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Revolving Mortgage [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Revolving Mortgage [Member]
Covered Loans [Member]
Jun. 30, 2011
Revolving Mortgage [Member]
Covered Loans [Member]
Dec. 31, 2010
Revolving Mortgage [Member]
Covered Loans [Member]
Jun. 30, 2011
Construction And Land Development - Non - Commercial [Member]
Dec. 31, 2010
Construction And Land Development - Non - Commercial [Member]
Jun. 30, 2011
Construction And Land Development - Non - Commercial [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Construction And Land Development - Non - Commercial [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Construction And Land Development - Non - Commercial [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Construction And Land Development - Non - Commercial [Member]
Covered Loans [Member]
Jun. 30, 2011
Construction And Land Development - Non - Commercial [Member]
Covered Loans [Member]
Dec. 31, 2010
Construction And Land Development - Non - Commercial [Member]
Covered Loans [Member]
Jun. 30, 2011
Consumer [Member]
Dec. 31, 2010
Consumer [Member]
Jun. 30, 2011
Consumer [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Consumer [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Consumer [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Consumer [Member]
Covered Loans [Member]
Jun. 30, 2011
Consumer [Member]
Covered Loans [Member]
Dec. 31, 2010
Consumer [Member]
Covered Loans [Member]
Jun. 30, 2011
Non Specific [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Non Specific [Member]
Noncovered Loans [Member]
Dec. 31, 2010
Non Specific [Member]
Noncovered Loans [Member]
Jun. 30, 2011
Noncovered Loans [Member]
Jun. 30, 2011
Noncovered Loans [Member]
Dec. 31, 2010
Noncovered Loans [Member]
Jun. 30, 2011
Covered Loans [Member]
Jun. 30, 2011
Covered Loans [Member]
Dec. 31, 2010
Covered Loans [Member]
Beginning balance $ 250,050 [1] $ 227,765 [2] $ 188,169 [1] $ 28,274 $ 28,327 $ 10,728 $ 10,512   $ 20,419 $ 20,654   $ 69,806 $ 57,952 $ 66,190 $ 64,772   $ 14,649 $ 13,199   $ 1,770 $ 964 $ 2,204 $ 2,200   $ 4,905 $ 4,148   $ 14,063 $ 12,989 $ 24,365 $ 24,089   $ 6,712 $ 6,828   $ 617 $ 693 $ 3,369 $ 3,384       $ 76 $ 1,419 $ 1,473   $ 11,102 $ 6,162 $ 7,129 $ 7,009   $ 1,012 $ 113   $ 19,363 $ 18,016   $ 1,451 $ 676   $ 2,562 $ 514 $ 1,328 $ 1,751   $ 5,468 $ 5,607   $ 994 $ 102 $ 27,778 $ 29,448   $ 13 $ 23   $ 14,095 $ 13,863   $ 177,968 $ 176,517   $ 54,629 $ 51,248  
Charge-offs           (308) (395)   (5,156) (9,952)       (825) (3,961)   (11,409) (24,007)         (83)   (3,289) (11,474)       (1,592) (2,613)   (2,413) (2,443)       (252) (252)                   (713) (719)   (1,927) (2,734)   (4,404) (4,446)             (363) (373)   (2,276) (5,044)       (3,221) (9,289)   (74) (74)         (11,678) (22,131)   (26,544) (55,728)  
Recoveries           13 37             546 555   7 15       6 6   91 91       277 282   12 12       37 37                   3 4   44 44   159 159             70 73             433 433               1,544 1,586   154 162  
Provision           (741) (462)   8,971 13,532       1,212 5,757   18,846 32,886       58 145   11,134 20,076       1,868 3,160   (2,439) (2,525)       204 189         (68) (122)       985 1,110   4,524 6,230   6,902 8,291   (1,441) (666)       289 (127)   1,528 4,157       2,089 6,487   73 63   (17) 215   12,781 24,643   41,196 73,753  
Ending balance 250,050 [1] 227,765 [2] 188,169 [1] 28,274 28,327 9,692 9,692 10,512 24,234 24,234 20,654 69,806 57,952 67,123 67,123 64,772 22,093 22,093 13,199 1,770 964 2,268 2,268 2,200 12,841 12,841 4,148 14,063 12,989 24,918 24,918 24,089 1,872 1,872 6,828 617 693 3,358 3,358 3,384     76 1,351 1,351 1,473 11,102 6,162 7,404 7,404 7,009 3,653 3,653 113 22,020 22,020 18,016 10 10 676 2,562 514 1,324 1,324 1,751 4,720 4,720 5,607 994 102 27,079 27,079 29,448 12 12 23 14,078 14,078 13,863 180,615 180,615 176,517 69,435 69,435 51,248
ALLL for loans and leases individually evaluated for impairment           5,526 5,526 5,883 3,003 3,003 5,085     5,272 5,272 4,601 6,370 6,370 7,331     56 56 67 447 447 151     430 430 598 193 193 170     48 48 58           7     455 455 384 272 272 6                 93 93 13 601 601 221     45 45 9             11,925 11,925 11,620 10,886 10,886 12,964
ALLL for loans and leases collectively evaluated for impairment           4,166 4,166 4,629 610 610 701     61,851 61,851 60,171 2,488 2,488 2,613     2,212 2,212 2,133 420 420 549     24,488 24,488 23,491 235 235 363     3,310 3,310 3,326       1,351 1,351 1,466     6,949 6,949 6,625 375 375 107 22,020 22,020 18,016 10 10 31     1,231 1,231 1,738 61 61 154     27,034 27,034 29,439 12 12 23       154,612 154,612 151,034 4,211 4,211 4,541
ALLL for loans and leases acquired with deteriorated credit quality                 20,621 20,621 14,868           13,235 13,235 3,255           11,974 11,974 3,448           1,444 1,444 6,295                                 3,006 3,006             645           4,058 4,058 5,232                             54,338 54,338 33,743
Loans and leases individually evaluated for impairment           28,274 28,274 28,327 91,977 91,977 59,763     69,806 69,806 57,952 114,958 114,958 84,841     1,770 1,770 964 24,845 24,845 9,330     14,063 14,063 12,989 525 525 8,330     617 617 693           76     11,102 11,102 6,162 9,671 9,671 4,743                 2,562 2,562 514 13,604 13,604 42,957     994 994 102             129,188 129,188 107,779 255,580 255,580 209,964
Loans and leases collectively evaluated for impairment           378,860 378,860 310,602 162,829 162,829 205,669     4,791,651 4,791,651 4,679,910 1,071,901 1,071,901 883,983     147,207 147,207 148,746 113,414 113,414 166,627     1,791,749 1,791,749 1,856,501 116,977 116,977 115,060     302,487 302,487 300,596 218     170,758 170,758 181,939     814,508 814,508 872,630 324,727 324,727 58,726 2,303,687 2,303,687 2,233,853 11,450 11,450 9,466     142,883 142,883 192,440 26,517 26,517 18,588     555,876 555,876 595,581 5,726 5,726 8,664       11,399,666 11,399,666 11,372,798 1,833,759 1,833,759 1,466,783
Loans and leases acquired with deteriorated credit quality                 83,844 83,844 102,988           120,916 120,916 120,240           35,347 35,347 34,704           7,990 7,990 9,087           6                     19,635 19,635 11,026       483 483 8,400           42,056 42,056 44,260           122 122               310,399 310,399 330,705
Non-specific ALLL                                                                                                                                                         14,078 14,078 13,863 14,078 14,078 13,863      
Total allowance for loan and lease losses             9,692 10,512   24,234 20,654       67,123 64,772   22,093 13,199       2,268 2,200   12,841 4,148       24,918 24,089   1,872 6,828       3,358 3,384         1,351 1,473       7,404 7,009   3,653 113   22,020 18,016   10 676       1,324 1,751   4,720 5,607       27,079 29,448   12 23   14,078 13,863   180,615 176,517   69,435 51,248
Net loans and leases $ 13,678,542 [1] $ 13,260,264 [2] $ 13,801,415 [1]     $ 407,134 $ 407,134 $ 338,929 $ 338,650 $ 338,650 $ 368,420     $ 4,861,457 $ 4,861,457 $ 4,737,862 $ 1,307,775 $ 1,307,775 $ 1,089,064     $ 148,977 $ 148,977 $ 149,710 $ 173,606 $ 173,606 $ 210,661     $ 1,805,812 $ 1,805,812 $ 1,869,490 $ 125,492 $ 125,492 $ 132,477     $ 303,104 $ 303,104 $ 301,289 $ 224     $ 170,758 $ 170,758 $ 182,015     $ 825,610 $ 825,610 $ 878,792 $ 354,033 $ 354,033 $ 74,495 $ 2,303,687 $ 2,303,687 $ 2,233,853 $ 11,933 $ 11,933 $ 17,866     $ 145,445 $ 145,445 $ 192,954 $ 82,177 $ 82,177 $ 105,805     $ 556,870 $ 556,870 $ 595,683 $ 5,848 $ 5,848 $ 8,664       $ 11,528,854 $ 11,528,854 $ 11,480,577 $ 2,399,738 $ 2,399,738 $ 2,007,452
[1] Unaudited
[2] Derived from the 2010 Annual Report on Form 10-K.