Note 2 - Securities (Details) - Securities in a Continuous Unrealized Loss Position - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Note 2 - Securities (Details) - Securities in a Continuous Unrealized Loss Position [Line Items]
Securities, continuous unrealized loss position, less than 12 months, fair value	$ 47,314,541	$ 15,380,927
Securities, continuous unrealized loss position, less than 12 months, unrealized losses	(727,804)	(77,741)
Securities, continuous unrealized loss position, 12 months or more, fair value	20,808,939	45,352,264
Securities, continuous unrealized loss position, 12 months or more, unrealized losses	(684,021)	(1,071,883)
Securities, continuous unrealized loss position, fair value	68,123,480	60,733,191
Securities, continuous unrealized loss position, unrealized losses	(1,411,825)	(1,149,624)
Equity Securities [Member]
Note 2 - Securities (Details) - Securities in a Continuous Unrealized Loss Position [Line Items]
Securities, continuous unrealized loss position, less than 12 months, fair value	0	0
Securities, continuous unrealized loss position, less than 12 months, unrealized losses	0	0
Securities, continuous unrealized loss position, 12 months or more, fair value	35,151	34,618
Securities, continuous unrealized loss position, 12 months or more, unrealized losses	(12,776)	(13,310)
Securities, continuous unrealized loss position, fair value	35,151	34,618
Securities, continuous unrealized loss position, unrealized losses	(12,776)	(13,310)
US Government Agencies Debt Securities [Member]
Note 2 - Securities (Details) - Securities in a Continuous Unrealized Loss Position [Line Items]
Securities, continuous unrealized loss position, less than 12 months, fair value	6,399,920	0
Securities, continuous unrealized loss position, less than 12 months, unrealized losses	(83,965)	0
Securities, continuous unrealized loss position, 12 months or more, fair value	1,996,864	10,256,773
Securities, continuous unrealized loss position, 12 months or more, unrealized losses	(53,136)	(271,282)
Securities, continuous unrealized loss position, fair value	8,396,784	10,256,773
Securities, continuous unrealized loss position, unrealized losses	(137,101)	(271,282)
US States and Political Subdivisions Debt Securities [Member]
Note 2 - Securities (Details) - Securities in a Continuous Unrealized Loss Position [Line Items]
Securities, continuous unrealized loss position, less than 12 months, fair value	6,167,019	2,677,626
Securities, continuous unrealized loss position, less than 12 months, unrealized losses	(70,266)	(7,692)
Securities, continuous unrealized loss position, 12 months or more, fair value	715,410	5,859,560
Securities, continuous unrealized loss position, 12 months or more, unrealized losses	(15,542)	(62,481)
Securities, continuous unrealized loss position, fair value	6,882,429	8,537,186
Securities, continuous unrealized loss position, unrealized losses	(85,808)	(70,173)
Corporate Debt Securities [Member]
Note 2 - Securities (Details) - Securities in a Continuous Unrealized Loss Position [Line Items]
Securities, continuous unrealized loss position, less than 12 months, fair value	1,675,500
Securities, continuous unrealized loss position, less than 12 months, unrealized losses	(79,708)
Securities, continuous unrealized loss position, 12 months or more, fair value	2,138,200
Securities, continuous unrealized loss position, 12 months or more, unrealized losses	(72,311)
Securities, continuous unrealized loss position, fair value	3,813,700
Securities, continuous unrealized loss position, unrealized losses	(152,019)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 2 - Securities (Details) - Securities in a Continuous Unrealized Loss Position [Line Items]
Securities, continuous unrealized loss position, less than 12 months, fair value	33,072,102	12,703,301
Securities, continuous unrealized loss position, less than 12 months, unrealized losses	(493,865)	(70,049)
Securities, continuous unrealized loss position, 12 months or more, fair value	15,923,314	29,201,313
Securities, continuous unrealized loss position, 12 months or more, unrealized losses	(530,256)	(724,810)
Securities, continuous unrealized loss position, fair value	48,995,416	41,904,614
Securities, continuous unrealized loss position, unrealized losses	$ (1,024,121)	$ (794,859)