Note 4 - Loans and Allowance for Credit Losses (Details) - Loans, Net Of Unamortized Net Deferred Fees (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	$ 2,945,158	$ 2,493,095
Percent	100.00%	100.00%
Less: Allowance for Credit Losses	(40,921)	(37,492)
Net loans	2,904,237	2,455,603
Secured Loan [Member] \| Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	694,350	545,070
Percent	24.00%	22.00%
Secured Loan [Member] \| Commercial Real Estate Investment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	1,119,800	914,638
Percent	38.00%	37.00%
Secured Loan [Member] \| Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	317,491	297,857
Percent	11.00%	12.00%
Secured Loan [Member] \| Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	90,418	61,871
Percent	3.00%	3.00%
Secured Loan [Member] \| Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	110,242	106,844
Percent	4.00%	4.00%
Secured Loan [Member] \| Consumer, Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	4,031	4,285
Secured Loan [Member] \| Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	574,167	533,722
Percent	19.00%	21.00%
Secured Loan [Member] \| Construction - C&I (owner occupied) [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	34,659	28,808
Percent	1.00%	1.00%
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	694,350	545,070
Less: Allowance for Credit Losses	(9,780)	(9,412)
Commercial Real Estate Investment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	1,119,800	914,638
Less: Allowance for Credit Losses	(10,359)	(9,148)
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	317,491	297,857
Less: Allowance for Credit Losses	(3,899)	(2,781)
Residential Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	90,418	61,871
Less: Allowance for Credit Losses	(944)	(659)
Home Equity Line of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	110,242	106,844
Less: Allowance for Credit Losses	(1,871)	(1,730)
Consumer, Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	4,031	4,285
Less: Allowance for Credit Losses	(134)	(371)
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount	608,826	562,530
Less: Allowance for Credit Losses	$ (13,934)	$ (13,391)

Percent of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

No definition available.

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524

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- Definition

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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5074-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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- Definition

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. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

Reference 2: 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)

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

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