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Loans sales and securitizations (Details 1) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2013
Fair value method
Residential Mortgage [Member]
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Dec. 31, 2012
Fair value method
Residential Mortgage [Member]
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Mar. 31, 2013
Amortization method
Residential Mortgage [Member]
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Dec. 31, 2012
Amortization method
Residential Mortgage [Member]
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Mar. 31, 2013
Amortization method
Automobile Loan [Member]
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Dec. 31, 2012
Amortization method
Automobile Loan [Member]
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Mar. 31, 2013
Residential Mortgage [Member]
Fair value method
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Mar. 31, 2012
Residential Mortgage [Member]
Fair value method
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Mar. 31, 2013
Residential Mortgage [Member]
Amortization method
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Mar. 31, 2012
Residential Mortgage [Member]
Amortization method
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Mar. 31, 2013
Automobile Loan [Member]
Amortization method
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Mar. 31, 2012
Automobile Loan [Member]
Amortization method
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| Summarize the changes in servicing rights using the amortization method | ||||||||||||
| Carrying value, beginning of year | $ 85,545 | $ 72,434 | $ 35,606 | $ 13,377 | ||||||||
| New servicing assets created | 9,286 | 10,287 | 0 | 19,883 | ||||||||
| Impairment charge/(recovery) | 13,651 | 7,558 | (217) | 0 | ||||||||
| Amortization and other | (4,137) | (4,384) | (4,953) | (2,480) | ||||||||
| Carrying value, end of period | 104,345 | 85,895 | 30,436 | 30,780 | ||||||||
| Fair value, end of period | 104,512 | 86,060 | 30,823 | 31,509 | ||||||||
| Weighted-average life (in years) | 3 years 7 months 0 days | 3 years 3 months 0 days | 4 years 7 months 0 days | 3 years 8 months 0 days | 4 years 1 month 0 days | 4 years 8 months 0 days | ||||||
| Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items] | ||||||||||||
| Constant pre-payment rate, actual | 15.60% | 19.52% | 10.60% | 15.45% | 15.12% | 13.80% | ||||||
| Constant pre-payment rate, 10% adverse change | (2,218) | (2,608) | (5,017) | (4,936) | (1,023) | (880) | ||||||
| Constant pre-payment rate, 20% adverse change | (4,484) | (5,051) | (9,705) | (9,451) | (2,048) | (1,771) | ||||||
| Spread over forward interest rate swap rates, actual | 13.06% | 12.88% | 9.46% | 9.40% | 5.00% | 5.00% | ||||||
| Spread over forward interest rate swap rates, 10% adverse change | (1,426) | (1,290) | (4,087) | (3,060) | (15) | (18) | ||||||
| Spread over forward interest rate swap rates, 20% adverse change | $ (2,853) | $ (2,580) | $ (8,173) | $ (6,119) | $ (30) | $ (36) | ||||||
| X | ||||||||||
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- Definition
Servicing impairment charge or recovery of previous impairment charge. No definition available.
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| X | ||||||||||
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- Definition
Weighted average life of securitized assets regardless of when the transfer occurred, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The hypothetical financial impact of a 10 percent adverse change of the discount rate on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The hypothetical financial impact of a 10 percent adverse change of prepayment speed on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The hypothetical financial impact of a 20 percent adverse change of the discount rate on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The hypothetical financial impact of a 20 percent adverse change of prepayment speed on the fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
A specified percentage variance in the discount rate assumption in the determination of fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
A specified percentage variance in the prepayment speed assumption in the determination of fair value of transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amortized carrying amount (balance) as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The value of new servicing assets, subsequently measured at amortized value, acquired or created during the current period through purchases or from transfers of financial assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of expense charged against earnings for the periodic recognition of servicing assets relative to estimated net servicing income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Fair value of the servicing asset that has been amortized as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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