Note 7 - Troubled Debt Restructurings (Detail) - Notes Restructured (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2013 Note A [Member]		Mar. 31, 2012 Note A [Member]		Mar. 31, 2013 Note B [Member]		Mar. 31, 2012 Note B [Member]
Commercial real estate			[1],[2]	$ 3,810	[1],[2]		[2],[3]	$ 1,796	[2],[3]
Reduction of interest income	$ 32

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

[2] As a result of the bulk loan sale described under Item 2 of this report, all Note A and Note B structure loans have been sold.

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