Note 7 - Deposits (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure Text Block [Abstract]

Schedule of Deposits [Table Text Block]

			December 31, 2015								December 31, 2014
			Weighted Average Rate			Balance		Percentage of Deposits			Weighted Average Rate			Balance		Percentage of Deposits
Demand				0.00	%	$	67,897,263		13.1	%		0.00	%	$	51,707,667		10.8	%
NOW				0.31	%		137,472,955		26.6	%		0.34	%		111,561,440		23.3	%
Money market				0.42	%		170,602,458		33.0	%		0.43	%		171,948,057		35.8	%
Savings				0.20	%		25,864,718		5.0	%		0.20	%		23,619,332		4.9	%
				0.30	%		401,837,394		77.7	%		0.32	%		358,836,496		74.8	%
Certificates:
0%	-	1.99%		0.90	%		114,204,316		22.0	%		0.84	%		117,499,869		24.5	%
2.00%	-	3.99%		2.17	%		1,343,985		0.3	%		2.27	%		3,481,917		0.7	%
				0.91	%		115,548,301		22.3	%		0.88	%		120,981,786		25.2	%
Total Deposits				0.44	%	$	517,385,695		100.0	%		0.47	%	$	479,818,282		100.0	%

Summary of Certificates of Deposits by Maturity [Table Text Block]

2016	$	53,074,067
2017		38,417,990
2018		10,457,935
2019		7,145,767
2020		4,318,298
Thereafter		2,134,244
	$	115,548,301

Summary of Interest Expense on Deposits [Table Text Block]

	Years ended
	December 31,
	2015			2014			2013
NOW and Money Market accounts	$	1,276,808		$	1,242,158		$	1,521,465
Savings accounts		49,467			49,071			53,647
Certificate accounts		1,102,928			1,050,081			1,295,864
Early withdrawal penalties		(5,332	)		(12,220	)		(11,378	)
	$	2,423,871		$	2,329,090		$	2,859,598