Note 11 - Subsequent Events (Detail) (USD $)	3 Months Ended				1 Months Ended		3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2013 Subsequent Event [Member] Interest Bearing [Member]	Jun. 30, 2013 Subsequent Event [Member] Noninterest Bearing [Member]	Apr. 19, 2013 Subsequent Event [Member] Classified Loans [Member]	Apr. 30, 2013 Subsequent Event [Member] Classified Loans [Member]	Jun. 30, 2013 Subsequent Event [Member]	Mar. 31, 2013 Considering Effect of Sale [Member]	Mar. 31, 2013 Classified Loans [Member]
Loans and Leases Receivable, Commitments to Purchase or Sell							$ 3,200,000
Deposits Held For Sale	21,758,000		20,900,000	900,000
Loans Receivable, Net									11,300,000
Proceeds from Sale of Loans Receivable					9,300,000
Allowance for Loan and Lease Losses, Write-offs	$ (250,000)	$ (3,265,000)				$ 2,000,000
Classified Assets Ratio	55.80%							42.90%