Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis (USD $)	Mar. 31, 2015		Dec. 31, 2014
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	$ 413,693,000	[1]	$ 432,912,000	[1]
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	179,914,000		193,468,000
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
US Government Agencies Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	179,914,000		193,468,000
US Government Agencies Debt Securities [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	179,914,000		193,468,000
Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	87,282,000		93,561,000
Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
Collateralized Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	87,282,000		93,561,000
Collateralized Mortgage Backed Securities [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	87,282,000		93,561,000
Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	124,071,000		122,801,000
Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	10,191,000		10,281,000
Municipal General Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	134,262,000		133,082,000
Municipal General Obligation Bonds [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	134,262,000		133,082,000
Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	10,287,000		10,873,000
Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
Municipal Revenue Bonds [Member] | Fair Value, Measurements, Recurring [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	10,287,000		10,873,000
Municipal Revenue Bonds [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	10,287,000		10,873,000
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	1,948,000		1,928,000
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	0		0
Other Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	1,948,000		1,928,000
Other Debt Obligations [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Available for sale securities	1,948,000		1,928,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets and Liabilities measured at fair value on recurring basis	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative	(450,000)		(253,000)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets and Liabilities measured at fair value on recurring basis	403,052,000		422,378,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative	0		0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets and Liabilities measured at fair value on recurring basis	10,191,000		10,281,000
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Derivative	(450,000)		(253,000)
Fair Value, Measurements, Recurring [Member]
Note 12 - Fair Values (Details) - Assets and Liabilities Measured at Fair Value on a Recurring Basis [Line Items]
Assets and Liabilities measured at fair value on recurring basis	$ 413,243,000		$ 432,659,000

[1] See Note 12 for a description of the fair value hierarchy as well as a disclosure of levels for classes of financial assets and liabilities.