Note 9 - Schedule of Fair Value Reported on a Recurring Basis (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities (Notes 2 & 5)	$ 8,642,053
US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Available-for-Sale Securities (Notes 2 & 5)		$ 6,654,303
Domestic Equities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Trading Securities	292,820	183,168
International Equities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Trading Securities	100,920	124,998
Other [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Trading Securities	16,984	137,310
Available-for-Sale Securities (Notes 2 & 5)	8,642,053	6,654,303
Trading Securities	$ 410,724	$ 445,476