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Note 8 - Borrowings (Details) - USD ($)	1 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Note 8 - Borrowings (Details) [Line Items]
Advances from Federal Home Loan Banks	$ 120,000,000	$ 120,000,000	$ 120,000,000
Derivative, Variable Interest Rate	3.46%	3.46%
Number of Consecutive Quarters for Interest Deferment		20
Interest Payable	$ 356,000	$ 356,000		$ 1,600,000
Proceeds from Notes Payable	2,000,000	$ 2,000,000
London Interbank Offered Rate (LIBOR) [Member]
Note 8 - Borrowings (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate		3.15%
Unsecured Debt [Member] | Trust [Member]
Note 8 - Borrowings (Details) [Line Items]
Subordinated Debt	$ 8,200,000	$ 8,200,000
Notes Payable, Other Payables [Member]
Note 8 - Borrowings (Details) [Line Items]
Debt Instrument, Term	10 years
Debt Instrument, Interest Rate, Stated Percentage	1.75%	1.75%
Minimum [Member]
Note 8 - Borrowings (Details) [Line Items]
Federal Home Loan Bank, Advances, Maturity Period, Fixed Rate		1 day
Federal Home Loan Bank, Advances, Interest Rate	0.30%	0.30%
Maximum [Member]
Note 8 - Borrowings (Details) [Line Items]
Federal Home Loan Bank, Advances, Maturity Period, Fixed Rate		6 months
Federal Home Loan Bank, Advances, Interest Rate	0.50%	0.50%

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Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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