Quarterly report pursuant to Section 13 or 15(d)

Allowance for Credit Losses by Portfolio Segment (Detail)

v2.4.0.6
Allowance for Credit Losses by Portfolio Segment (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Allowance for Loan Losses:            
Beginning Balance $ 71,893 $ 81,052 $ 109,029 $ 89,936 $ 146,059  
Charge-Offs 7,223 14,716 16,551 34,260 62,384  
Recoveries on Loans Previously Charged Off 1,320 1,324 1,045 3,681 8,822  
Provision 117 4,233 7,269 6,750 8,295  
Ending Balance 66,107 71,893 100,792 66,107 100,792  
Ending Balance: Individually Evaluated for Impairment 6,314   29,830 6,314 29,830  
Ending Balance: Collectively Evaluated for Impairment 59,793   70,962 59,793 70,962  
Loans Receivables:            
Ending Balance 1,958,290   1,992,031 1,958,290 1,992,031 1,938,740
Ending Balance: Individually Evaluated for Impairment 58,637   144,289 58,637 144,289  
Ending Balance: Collectively Evaluated for Impairment 1,899,653   1,847,742 1,899,653 1,847,742  
Real Estate Loan [Member]
            
Allowance for Loan Losses:            
Beginning Balance 21,406   24,115 19,637 32,766  
Charge-Offs 1,321   2,142 9,406 14,786  
Recoveries on Loans Previously Charged Off 58     575 2,744  
Provision 1,080   (165) 10,419 1,084  
Ending Balance 21,223   21,808 21,223 21,808  
Ending Balance: Individually Evaluated for Impairment 768   3,630 768 3,630  
Ending Balance: Collectively Evaluated for Impairment 20,455   18,178 20,455 18,178  
Loans Receivables:            
Ending Balance 840,061   754,472 840,061 754,472 749,920
Ending Balance: Individually Evaluated for Impairment 16,315   47,172 16,315 47,172  
Ending Balance: Collectively Evaluated for Impairment 823,746   707,300 823,746 707,300  
Commercial and Industrial Loans [Member]
            
Allowance for Loan Losses:            
Beginning Balance 46,810   82,845 66,005 108,986  
Charge-Offs 5,571   14,023 24,079 46,715  
Recoveries on Loans Previously Charged Off 1,251   1,014 3,053 6,025  
Provision 174   4,961 (2,317) 6,501  
Ending Balance 42,664   74,797 42,664 74,797  
Ending Balance: Individually Evaluated for Impairment 5,148   25,915 5,148 25,915  
Ending Balance: Collectively Evaluated for Impairment 37,516   48,882 37,516 48,882  
Loans Receivables:            
Ending Balance 1,079,814   1,192,740 1,079,814 1,192,740 1,145,474
Ending Balance: Individually Evaluated for Impairment 41,084   95,959 41,084 95,959  
Ending Balance: Collectively Evaluated for Impairment 1,038,730   1,096,781 1,038,730 1,096,781  
Consumer Loans [Member]
            
Allowance for Loan Losses:            
Beginning Balance 1,757   1,587 2,243 2,079  
Charge-Offs 331   386 775 883  
Recoveries on Loans Previously Charged Off 11   31 53 53  
Provision 783   992 699 975  
Ending Balance 2,220   2,224 2,220 2,224  
Ending Balance: Individually Evaluated for Impairment 398   285 398 285  
Ending Balance: Collectively Evaluated for Impairment 1,822   1,939 1,822 1,939  
Loans Receivables:            
Ending Balance 38,415   44,819 38,415 44,819 43,346
Ending Balance: Individually Evaluated for Impairment 1,238   1,158 1,238 1,158  
Ending Balance: Collectively Evaluated for Impairment 37,177   43,661 37,177 43,661  
Unallocated
            
Allowance for Loan Losses:            
Beginning Balance 1,920   482 2,051 2,228  
Provision (1,920)   1,481 (2,051) (265)  
Ending Balance     1,963   1,963  
Ending Balance: Collectively Evaluated for Impairment     $ 1,963   $ 1,963