Note 2 - Securities (Details) - Available-for-sale Securities - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Note 2 - Securities (Details) - Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	$ 98,378,132	$ 87,179,764
Available-for-sale securities, gross unrealized (losses)	(1,411,825)	(1,149,624)
Available-for-sale securities, approximate fair value	97,292,487	86,467,985
Available-for-sale securities, gross unrealized gains	326,180	437,845
Equity Securities [Member]
Note 2 - Securities (Details) - Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	102,212	102,212
Available-for-sale securities, gross unrealized (losses)	(12,776)	(13,310)
Available-for-sale securities, approximate fair value	99,517	105,023
Available-for-sale securities, gross unrealized gains	10,081	16,121
US Government Agencies Debt Securities [Member]
Note 2 - Securities (Details) - Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	8,533,885	10,528,055
Available-for-sale securities, gross unrealized (losses)	(137,101)	(271,282)
Available-for-sale securities, approximate fair value	8,396,784	10,256,773
Available-for-sale securities, gross unrealized gains	0	0
US States and Political Subdivisions Debt Securities [Member]
Note 2 - Securities (Details) - Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	31,132,635	15,474,316
Available-for-sale securities, gross unrealized (losses)	(85,808)	(70,173)
Available-for-sale securities, approximate fair value	31,349,162	15,589,890
Available-for-sale securities, gross unrealized gains	302,335	185,747
Corporate Debt Securities [Member]
Note 2 - Securities (Details) - Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	3,965,719
Available-for-sale securities, gross unrealized (losses)	(152,019)
Available-for-sale securities, approximate fair value	3,813,700
Available-for-sale securities, gross unrealized gains	0
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 2 - Securities (Details) - Available-for-sale Securities [Line Items]
Available-for-sale securities, amortized cost	54,643,681	61,075,181
Available-for-sale securities, gross unrealized (losses)	(1,024,121)	(794,859)
Available-for-sale securities, approximate fair value	53,633,324	60,516,299
Available-for-sale securities, gross unrealized gains	$ 13,764	$ 235,977

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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