Loan and Lease Finance Receivables and Allowance for Credit Losses (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	$ 93,964	$ 105,259
Charge-offs	(2,356)	(12,038)
Recoveries	314	778
Provision/Reallocation of ALLL		7,068
Ending balance	91,922	101,067
Ending balance: Individually evaluated for impairment	1,510	1,286
Ending balance: Collectively evaluated for impairment	90,412	99,781
Finance receivables ending balance	3,433,459	3,604,087
Ending balance: Individually evaluated for impairment	99,692	133,384
Ending balance: Collectively evaluated for impairment	3,333,767	3,470,703
Covered Loans [Member]
Allowance for credit losses and recorded investment in financing receivables
Charge-offs	(31)	(394)
Recoveries		3
Provision/Reallocation of ALLL	(31)	391
Finance receivables ending balance	241,943	348,759
Ending balance: Individually evaluated for impairment	2,506	14,965
Ending balance: Collectively evaluated for impairment	239,437	333,794
Commercial and Industrial [Member]
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	10,654	11,472
Charge-offs	(560)	(689)
Recoveries	62	142
Provision/Reallocation of ALLL	1,751	(482)
Ending balance	11,907	10,443
Ending balance: Individually evaluated for impairment	421	364
Ending balance: Collectively evaluated for impairment	11,486	10,079
Finance receivables ending balance	497,625	456,925
Ending balance: Individually evaluated for impairment	7,820	10,136
Ending balance: Collectively evaluated for impairment	489,805	446,789
Construction [Member]
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	4,947	10,188
Charge-offs		(6,160)
Recoveries	27
Provision/Reallocation of ALLL	(651)	2,350
Ending balance	4,323	6,378
Ending balance: Collectively evaluated for impairment	4,323	6,378
Finance receivables ending balance	67,382	109,540
Ending balance: Individually evaluated for impairment	29,354	42,320
Ending balance: Collectively evaluated for impairment	38,028	67,220
Real Estate [Member]
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	51,873	43,529
Charge-offs	(530)	(2,471)
Recoveries	221	581
Provision/Reallocation of ALLL	371	1,151
Ending balance	51,935	42,790
Ending balance: Individually evaluated for impairment	787	885
Ending balance: Collectively evaluated for impairment	51,148	41,905
Finance receivables ending balance	2,153,345	2,172,172
Ending balance: Individually evaluated for impairment	51,153	62,707
Ending balance: Collectively evaluated for impairment	2,102,192	2,109,465
Municipal Lease Finance Receivables [Member]
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	2,403	2,172
Provision/Reallocation of ALLL	(383)	639
Ending balance	2,020	2,811
Ending balance: Collectively evaluated for impairment	2,020	2,811
Finance receivables ending balance	114,724	122,422
Ending balance: Collectively evaluated for impairment	114,724	122,422
Dairy and Livestock [Member]
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	17,230	36,061
Charge-offs	(1,150)	(2,204)
Provision/Reallocation of ALLL	(54)	(430)
Ending balance	16,026	33,427
Ending balance: Individually evaluated for impairment	221
Ending balance: Collectively evaluated for impairment	15,805	33,427
Finance receivables ending balance	285,653	325,052
Ending balance: Individually evaluated for impairment	8,470	2,996
Ending balance: Collectively evaluated for impairment	277,183	322,056
Consumer, Auto and Other [Member]
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	1,638	1,034
Charge-offs	(85)	(120)
Recoveries	4	52
Provision/Reallocation of ALLL	(14)	707
Ending balance	1,543	1,673
Ending balance: Individually evaluated for impairment	81	37
Ending balance: Collectively evaluated for impairment	1,462	1,636
Finance receivables ending balance	72,787	69,217
Ending balance: Individually evaluated for impairment	389	260
Ending balance: Collectively evaluated for impairment	72,398	68,957
Unallocated [Member]
Allowance for credit losses and recorded investment in financing receivables
Beginning balance	5,219	803
Provision/Reallocation of ALLL	(1,051)	2,742
Ending balance	4,168	3,545
Ending balance: Collectively evaluated for impairment	$ 4,168	$ 3,545

Financing receivable recorded investment.

No definition available.

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- Definition

Provision and reallocation of allowance for credit losses.

+ References

No definition available.

+ Details

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524

-Subparagraph (g)

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

+ Details

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- Definition

Reduction to the allowance for credit losses related to collections on financing receivables which have been partially or fully charged off as bad debts.

+ References

+ Details

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- Definition

Reduction to the allowance for credit losses related to financing receivables deemed uncollectible.

+ References

+ Details

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

+ References

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- Definition

The allowance for loan and lease losses represents the reserve to cover probable credit losses related to specifically identified loans and leases, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for loan losses in connection with business combinations determined to be appropriate.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Chapter V

-Section 563c.102

-Paragraph 8

-Subparagraph a(ii)

-Subsection I

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section L

-Subsection 1

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 114

-Paragraph 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 9

-Section 03

-Paragraph 7

-Subparagraph d

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 8, 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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