Quarterly report pursuant to Section 13 or 15(d)

Fair Values of Assets and Liabilities (Significant unobservable Level 3 inputs) (Details 6)

v2.4.0.6
Fair Values of Assets and Liabilities (Significant unobservable Level 3 inputs) (Details 6) (USD $)
3 Months Ended
Mar. 31, 2012
Maximum [Member]
Mar. 31, 2012
Minimum [Member]
Mar. 31, 2012
Weighted Average [Member]
Mar. 31, 2012
MSRs [Member]
Maximum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
MSRs [Member]
Minimum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
MSRs [Member]
Weighted Average [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Derivative Instruments [Member]
Maximum [Member]
Market Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Derivative Instruments [Member]
Minimum [Member]
Market Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Derivative Instruments [Member]
Weighted Average [Member]
Market Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Municipal securities [Member]
Maximum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Municipal securities [Member]
Minimum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Municipal securities [Member]
Weighted Average [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Private label CMO [Member]
Maximum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Private label CMO [Member]
Minimum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Private label CMO [Member]
Weighted Average [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Asset-backed Securities [Member]
Maximum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Asset-backed Securities [Member]
Minimum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Asset-backed Securities [Member]
Weighted Average [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Automobile Loan [Member]
Maximum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Automobile Loan [Member]
Minimum [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Mar. 31, 2012
Automobile Loan [Member]
Weighted Average [Member]
Cost Approach Valuation Technique [Member]
Level 3 [Member]
Quantitative information about level 3 fair value measurements                                          
Constant prepayment rate (CPR)       35.00% 8.00% 18.00%             26.70% 0.80% 12.10% 9.80% 5.10% 6.20%      
Probability of default                         13.00% 0.00% 2.10%            
Loss severity                         100.00% 5.00% 31.50% 75.00% 20.00% 63.50%      
Discount rate                   7.00% 0.60% 2.40% 10.50% 3.60% 7.60% 16.50% 5.50% 9.40% 9.00% 1.00% 3.80%
Option Adjusted Spread (OAS)       4,375 (856) 654                              
Net costs to service       $ 107 $ 10 $ 35                              
Net market price             12.90% (4.40%) 1.70%                        
Estimated pull thru %             90.00% 50.00% 76.00%                        
Cumulative prepayment rate 100.00%   4.30%                           0.00%        
Constant defualt rate                               4.10% 0.30% 2.80%      
Cumulative default 100.00% 1.10% 21.30%                                    
Loss given default                               100.00% 85.00% 93.00%      
Cure given deferral                               100.00% 0.00% 40.70%      
Absolute prepayment speed (ABS)                                     1.30% 1.30% 1.30%
Life of pool cumulative losses                                     2.40% 2.40% 2.40%