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Note 4 - Loans and Allowance for Loan Losses (Details) - Components of Loan Portfolio (USD $)	9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	$ 2,068,265,000	$ 1,053,243,000
Loans, percentage of portfolio	100.00%	100.00%
Loans, percentage of change in loans	96.40%
Originated Loan [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	362,329,000	286,373,000
Loans, percentage of portfolio	30.50%	27.20%
Loans, percentage of change in loans	26.50%
Originated Loan [Member] | Commercial Vacant Land and Land Development and Residential Construction Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	30,246,000	36,741,000
Loans, percentage of portfolio	2.50%	3.50%
Loans, percentage of change in loans	(17.70%)
Originated Loan [Member] | Commercial Real Estate Owner Occupied Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	267,072,000	261,877,000
Loans, percentage of portfolio	22.50%	24.90%
Loans, percentage of change in loans	2.00%
Originated Loan [Member] | Commercial Real Estate Non Owner Occupied Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	401,762,000	364,066,000
Loans, percentage of portfolio	33.90%	34.60%
Loans, percentage of change in loans	10.40%
Originated Loan [Member] | Commercial Real Estate Multi Family and Residential Rental Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	42,393,000	37,639,000
Loans, percentage of portfolio	3.60%	3.50%
Loans, percentage of change in loans	12.60%
Originated Loan [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	1,103,802,000	986,696,000	1,007,763,000
Loans, percentage of portfolio	93.00%	93.70%
Loans, percentage of change in loans	11.90%
Originated Loan [Member] | Retail Home Equity and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	44,917,000	35,080,000
Loans, percentage of portfolio	3.80%	3.30%
Loans, percentage of change in loans	28.00%
Originated Loan [Member] | Retail 1-4 Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	37,994,000	31,467,000
Loans, percentage of portfolio	3.20%	3.00%
Loans, percentage of change in loans	20.70%
Originated Loan [Member] | Retail Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	82,911,000	66,547,000	67,724,000
Loans, percentage of portfolio	7.00%	6.30%
Loans, percentage of change in loans	24.60%
Originated Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	1,186,713,000	1,053,243,000	1,075,487,000
Loans, percentage of portfolio	100.00%	100.00%
Loans, percentage of change in loans	12.70%
Acquired Loan [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	179,476,000	0
Loans, percentage of portfolio	20.40%
Loans, percentage of change in loans
Acquired Loan [Member] | Commercial Vacant Land and Land Development and Residential Construction Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	21,972,000	0
Loans, percentage of portfolio	2.50%
Loans, percentage of change in loans
Acquired Loan [Member] | Commercial Real Estate Owner Occupied Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	145,398,000	0
Loans, percentage of portfolio	16.50%
Loans, percentage of change in loans
Acquired Loan [Member] | Commercial Real Estate Non Owner Occupied Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	182,660,000	0
Loans, percentage of portfolio	20.70%
Loans, percentage of change in loans
Acquired Loan [Member] | Commercial Real Estate Multi Family and Residential Rental Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	53,256,000	0
Loans, percentage of portfolio	6.00%
Loans, percentage of change in loans
Acquired Loan [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	582,762,000	0
Loans, percentage of portfolio	66.10%
Loans, percentage of change in loans
Acquired Loan [Member] | Retail Home Equity and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	119,033,000	0
Loans, percentage of portfolio	13.50%
Loans, percentage of change in loans
Acquired Loan [Member] | Retail 1-4 Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	179,757,000	0
Loans, percentage of portfolio	20.40%
Loans, percentage of change in loans
Acquired Loan [Member] | Retail Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	298,790,000	0
Loans, percentage of portfolio	33.90%
Loans, percentage of change in loans
Acquired Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	881,552,000	0
Loans, percentage of portfolio	100.00%
Loans, percentage of change in loans
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	541,805,000	286,373,000
Loans, percentage of portfolio	26.20%	27.20%
Loans, percentage of change in loans	89.20%
Commercial Vacant Land and Land Development and Residential Construction Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	52,218,000	36,741,000
Loans, percentage of portfolio	2.50%	3.50%
Loans, percentage of change in loans	42.10%
Commercial Real Estate Owner Occupied Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	412,470,000	261,877,000
Loans, percentage of portfolio	19.90%	24.90%
Loans, percentage of change in loans	57.50%
Commercial Real Estate Non Owner Occupied Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	584,422,000	364,066,000
Loans, percentage of portfolio	28.30%	34.60%
Loans, percentage of change in loans	60.50%
Commercial Real Estate Multi Family and Residential Rental Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	95,649,000	37,639,000
Loans, percentage of portfolio	4.60%	3.50%
Loans, percentage of change in loans	154.10%
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	1,686,564,000	986,696,000
Loans, percentage of portfolio	81.50%	93.70%
Loans, percentage of change in loans	70.90%
Retail Home Equity and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	163,950,000	35,080,000
Loans, percentage of portfolio	7.90%	3.30%
Loans, percentage of change in loans	367.40%
Retail 1-4 Family Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	217,751,000	31,467,000
Loans, percentage of portfolio	10.60%	3.00%
Loans, percentage of change in loans	592.00%
Retail Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans (in Dollars)	$ 381,701,000	$ 66,547,000
Loans, percentage of portfolio	18.50%	6.30%
Loans, percentage of change in loans	473.60%

X

- Definition

Loan portfolio classes and segments expressed as a percentage of the companies aggregate loans.

+ References

No definition available.

+ Details

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X

- Definition

The percentage of increase or (decrease) in loans and leases receivable net of deferred income.

+ References

No definition available.

+ Details

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X

- 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=35738203&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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