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Fair Values of Assets and Liabilities (Significant unobservable Level 3 inputs) (Details 6) (USD $)
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3 Months Ended | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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]
|
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| 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% | ||||||||||||||||||