Note 2 - Investment Securities (Detail) - Gross Unrealized Losses and Fair value of Securities in a Continuous Unrealized Loss Position (USD $)	Jun. 30, 2012	Dec. 31, 2011
Securities available for sale:
Available for Sale Securities less than 12 months fair value	$ 95,485,379	$ 65,137,975
Available for Sale Securities less than 12 months gross unrealized losses	(764,563)	(108,234)
Available for Sale Securities 12 months or more fair value	0	83,578
Available for Sale Securities 12 months or more gross unrealized losses	0	(5,872)
Available for Sale Securities fair value	95,485,379	65,221,553
Available for Sale Securities gross unrealized losses	(764,563)	(114,106)
US Government Agencies Debt Securities [Member]
Securities available for sale:
Available for Sale Securities less than 12 months fair value	46,609,893	59,979,620
Available for Sale Securities less than 12 months gross unrealized losses	(191,137)	(55,687)
Available for Sale Securities 12 months or more fair value	0	0
Available for Sale Securities 12 months or more gross unrealized losses	0	0
Available for Sale Securities fair value	46,609,893	59,979,620
Available for Sale Securities gross unrealized losses	(191,137)	(55,687)
Residential Mortgage Backed Securities [Member]
Securities available for sale:
Available for Sale Securities less than 12 months fair value	26,844,026	4,906,398
Available for Sale Securities less than 12 months gross unrealized losses	(112,224)	(8,215)
Available for Sale Securities 12 months or more fair value	0	0
Available for Sale Securities 12 months or more gross unrealized losses	0	0
Available for Sale Securities fair value	26,844,026	4,906,398
Available for Sale Securities gross unrealized losses	(112,224)	(8,215)
US States and Political Subdivisions Debt Securities [Member]
Securities available for sale:
Available for Sale Securities less than 12 months fair value	21,831,460
Available for Sale Securities less than 12 months gross unrealized losses	(420,770)
Available for Sale Securities 12 months or more fair value	0
Available for Sale Securities 12 months or more gross unrealized losses	0
Available for Sale Securities fair value	21,831,460
Available for Sale Securities gross unrealized losses	(420,770)
Securities (Assets) [Member]
Securities available for sale:
Available for Sale Securities less than 12 months fair value	200,000	251,957
Available for Sale Securities less than 12 months gross unrealized losses	(40,432)	(44,332)
Available for Sale Securities 12 months or more fair value	0	2,778
Available for Sale Securities 12 months or more gross unrealized losses	0	(472)
Available for Sale Securities fair value	200,000	254,735
Available for Sale Securities gross unrealized losses	(40,432)	(44,804)
Trust preferred securities [Member]
Securities available for sale:
Available for Sale Securities less than 12 months fair value		0
Available for Sale Securities less than 12 months gross unrealized losses		0
Available for Sale Securities 12 months or more fair value		80,800
Available for Sale Securities 12 months or more gross unrealized losses		(5,400)
Available for Sale Securities fair value		80,800
Available for Sale Securities gross unrealized losses		$ (5,400)