Note 3 - Securities (Details) - Amortized Cost and Approximate Fair Value of Held to Maturity Securities (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Debt Securities:
Approximate fair value	$ 94,222
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities:
Amortized cost	89,213	181,042
Gross unrealized gains	5,009	12,440
Approximate fair value	$ 94,222	$ 193,482