Note 11 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis - Fair Value, Measurements, Nonrecurring [Member] - USD ($)		Sep. 30, 2015	Dec. 31, 2014
Note 11 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	[1]	$ 9,258,000	$ 17,097,000
Foreclosed assets	[1]	2,272,000	1,995,000
Assets and liabilities measured at fair value on a nonrecurring basis		11,530,000	19,092,000
Fair Value, Inputs, Level 1 [Member]
Note 11 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	[1]	0	0
Foreclosed assets	[1]	0	0
Assets and liabilities measured at fair value on a nonrecurring basis		0	0
Fair Value, Inputs, Level 2 [Member]
Note 11 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	[1]	0	0
Foreclosed assets	[1]	0	0
Assets and liabilities measured at fair value on a nonrecurring basis		0	0
Fair Value, Inputs, Level 3 [Member]
Note 11 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	[1]	9,258,000	17,097,000
Foreclosed assets	[1]	2,272,000	1,995,000
Assets and liabilities measured at fair value on a nonrecurring basis		$ 11,530,000	$ 19,092,000

[1] Represents carrying value and related write-downs for which adjustments are based on the estimated value of the property or other assets.