Note 3 - Loans and Allowance for Loan Losses (Details) - Components of Domestic Loans Held For Sale and Loans Held in Portfolio (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real estate—residential mortgage	$ 49,188	$ 121,237
Loans held in portfolio, net of unearned discounts	1,760,134	1,666,598
Less unearned discounts	18,069	16,845
Loans held in portfolio, net of unearned discounts	1,742,065	1,649,753
	1,791,253	1,770,990
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	631,415	629,369
Loans held in portfolio, net of unearned discounts	629,317	627,785
Loans To Non Depository Institutions [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	401,032	348,843
Loans held in portfolio, net of unearned discounts	400,812	348,809
Factored Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	148,251	151,830
Loans held in portfolio, net of unearned discounts	148,120	151,593
Equipment Financing Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	201,071	177,084
Loans held in portfolio, net of unearned discounts	185,451	162,094
Real Estate Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	174,146	151,609
Loans held in portfolio, net of unearned discounts	174,146	151,609
Commercial Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	168,162	182,735
Loans held in portfolio, net of unearned discounts	168,162	182,735
Commercial Real Estate Construction and Land Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	13,703	13,277
Loans held in portfolio, net of unearned discounts	13,703	13,277
Loans To Individual [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	22,354	11,851
Loans held in portfolio, net of unearned discounts	22,354	11,851
Loans To Depository Institutions [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held in portfolio, net of unearned discounts	$ 0	$ 0

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Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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-SubTopic 10

-Section 50

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-Name Regulation S-X (SX)

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-Section 03

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Amount of loans held for sale, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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-Publisher FASB

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph a

-Article 9

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

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