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Note 9 - Borrowings (Details Textual) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2009	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Minimum [Member]
Federal Home Loan Bank, Advances, Maturity Period, Fixed Rate					3 days
Federal Home Loan Bank, Advances, Interest Rate			0.061%		0.061%
Maximum [Member]
Federal Home Loan Bank, Advances, Maturity Period, Fixed Rate					4 years 150 days
Federal Home Loan Bank, Advances, Interest Rate			0.51%		0.51%
Unsecured Debt [Member] | Trust [Member]
Subordinated Debt			$ 8,200		$ 8,200
Notes Payable, Other Payables [Member]
Debt Instrument, Term	10 years
Debt Instrument, Interest Rate, Stated Percentage	1.75%					1.75%
Long-term Debt, Gross			1,800		$ 1,800		$ 1,900
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate					3.15%
Advances from Federal Home Loan Banks			135,000		$ 135,000		$ 132,000
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged			$ 146,100		$ 146,100
Derivative, Variable Interest Rate			4.01%		4.01%
Number of Consecutive Quarters for Interest Deferment				20
Interest Expense, Debt		$ 1,600	$ 700
Proceeds from Notes Payable	$ 2,000					$ 2,000

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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