Note 3 - Investment Securities (Details) (USD $)	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Note 3 - Investment Securities (Details) [Line Items]
Number of Securities		533
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		350
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss (in Dollars)		$ 30,434		$ 23,469
Other than Temporary Impairment Losses, Investments (in Dollars)	$ 62,400		$ 62,400
Unrealized Losses 12 Months or Greater [Member]
Note 3 - Investment Securities (Details) [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions		3