Note 7 - Fair Value Measurements (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Impaired Financing Receivable, Unpaid Principal Balance	$ 700,000		$ 700,000
Impaired Loans Valuation Allowance	300,000		300,000
Provision for Loan Losses Expensed	2,000,000	3,000,000
Other Real Estate Outstanding Balance	1,900,000		1,500,000
Other Real Estate	1,917,000		1,452,000
Real Estate Owned, Valuation Allowance	0		0
Impairment of Real Estate	71,000
Impaired Loan [Member]
Provision for Loan Losses Expensed	$ 0