Note 8 - Troubled Debt Restructurings (Details) - Multiple Note Restructuring (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Note 8 - Troubled Debt Restructurings (Details) - Multiple Note Restructuring [Line Items]
Commercial real estate	$ 3,700		$ 4,600
Reduction of interest income (3)	3	[1]
Note A Structure [Member] | Commercial Real Estate Portfolio Segment [Member]
Note 8 - Troubled Debt Restructurings (Details) - Multiple Note Restructuring [Line Items]
Commercial real estate	275	[2]
Note B Structure [Member] | Commercial Real Estate Portfolio Segment [Member]
Note 8 - Troubled Debt Restructurings (Details) - Multiple Note Restructuring [Line Items]
Commercial real estate	$ 174	[3]

[1] Reflects amount of interest income reduction during the three months ended March 31, 2015, as a result of multiple note restructures.

[2] If Note A was on nonaccrual status, it may be placed back on accrual status based on sustained historical payment performance of generally nine months.

[3] Note B is immediately charged-off upon restructuring; however, payment in full is due at maturity of the note.