XML 46 R61.htm IDEA: XBRL DOCUMENT v2.4.0.6
Loan and Lease Finance Receivables and Allowance for Credit Losses - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
Jun. 30, 2011
Dec. 31, 2012
Dec. 31, 2011
Debt And Capital Lease Obligations [Line Items]      
Fixed rate loans held   $ 1,530,000,000  
Secure borrowings from FHLB and Federal Reserve Bank   2,320,000,000 2,310,000,000
Transfers of loans to held-for-sale 6,000,000    
Charge-off against allowance for credit losses 619,000    
Write-down of loans held-for-sale     1,700,000
Impaired, at carrying value   108,390,000 101,226,000
Impaired, at carrying value   81,700,000  
Amount of impaired loan transferred to non accrual status   10,600,000  
Reserve for unfunded commitments   1,000,000 918,000
Risk for credit risk for undisbursed commitments   8,600,000 9,600,000
Allocation of allowance to troubled debt restructuring   1,400,000 27,000.0
Covered Loans Held-for-Sale Activity [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Write-down of loans held-for-sale   1,219,000 0
Loans held-for-sale     5,664,000
Nonaccrual Commercial Real Estate Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Outstanding balance   21,000,000  
Nonaccrual Consumer Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Outstanding balance   215,000  
Non-Covered Impaired Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Impaired, at carrying value     101,200,000
Performing Financing Receivable [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Impaired, at carrying value   108,400,000  
Impaired, at carrying value   50,400,000  
Number of performing loans   34  
Nonaccrual Single Family Mortgage Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Outstanding balance   13,100,000  
Non-Performing Financing Receivable [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Impaired, at carrying value   31,300,000  
Impaired, at carrying value   31,300,000  
Allowance Impaired Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Impaired, at carrying value   2,300,000  
Allowance Impaired Non-Covered Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Impaired, at carrying value     3,000,000
Commercial Real Estate Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Percentage of loan portfolio   62.35%  
Outstanding balance   2,400,000  
Number of contracts   1  
Nonaccrual Dairy and Livestock Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Outstanding balance   9,800,000  
Non-covered Impaired Loans Modified in Troubled Debt Restructure [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Impaired, at carrying value   81,700,000  
Construction [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Percentage of loan portfolio   1.76%  
Outstanding balance   10,700,000  
Number of contracts   1  
Nonaccrual Residential Construction and Land Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Outstanding balance   10,700,000  
Nonaccrual Commercial and Industrial Loans [Member]
      
Debt And Capital Lease Obligations [Line Items]      
Outstanding balance   $ 3,100,000