Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Fair Value, Measurements, Nonrecurring [Member], USD $)	Mar. 31, 2015		Dec. 31, 2014
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	$ 36,958,000	[1]	$ 17,097,000	[1]
Foreclosed assets	1,664,000	[1]	1,995,000	[1]
Assets and liabilities measured at fair value on a nonrecurring basis	38,622,000		19,092,000
Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	0	[1]	0	[1]
Foreclosed assets	0	[1]	0	[1]
Assets and liabilities measured at fair value on a nonrecurring basis	0		0
Fair Value, Inputs, Level 2 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	0	[1]	0	[1]
Foreclosed assets	0	[1]	0	[1]
Assets and liabilities measured at fair value on a nonrecurring basis	0		0
Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis [Line Items]
Impaired loans	36,958,000	[1]	17,097,000	[1]
Foreclosed assets	1,664,000	[1]	1,995,000	[1]
Assets and liabilities measured at fair value on a nonrecurring basis	$ 38,622,000		$ 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.