Note 4 - Loans and Allowance for Loan Losses (Details) - Loans restructured as TDRs, excluding loans acquired, segregated by class of loans: (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2013 Real Estate Loans [Member] Change in Rate [Member] Single Family Residential Loans [Member]	Jun. 30, 2012 Real Estate Loans [Member] Change in Rate [Member] Other Commercial Real Estate Loans [Member]	Jun. 30, 2013 Real Estate Loans [Member] Single Family Residential Loans [Member]	Jun. 30, 2012 Real Estate Loans [Member] Other Commercial Real Estate Loans [Member]	Jun. 30, 2012 Consumer Loans [Member] Change in Rate [Member] Other Consumer [Member]	Jun. 30, 2012 Consumer Loans [Member] Other Consumer [Member]	Jun. 30, 2012 Commercial Loans [Member] Change in Rate [Member] Commercial [Member]	Jun. 30, 2012 Commercial Loans [Member] Change in Rate [Member]	Jun. 30, 2012 Commercial Loans [Member] Commercial [Member]	Jun. 30, 2012 Commercial Loans [Member]	Jun. 30, 2012 Change in Rate [Member]
Real estate:
Number of Loans	6			1	4		1			1	1
Balance Prior to TDR	$ 1,152,000			$ 321,000	$ 1,054,000		$ 48,000			$ 50,000	$ 50,000
Balance at March 31	951,000			318,000	879,000		33,000			39,000	39,000
Financial Impact on Date of Restructure		$ 318	$ 879			$ 33		$ 39	$ 39			$ 951