Note 7 - Deposits (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Deposit Liabilities, Type [Table Text Block]

			December 31, 2017								December 31, 2016
			Weighted Average Rate			Balance		Percentage of Deposits			Weighted Average Rate			Balance		Percentage of Deposits
Demand				0.00	%	$	94,727,683		15.6	%		0.01	%	$	80,910,910		16.0	%
NOW				0.35	%		139,458,528		23.0	%		0.30	%		129,137,807		25.6	%
Money market				0.73	%		187,064,098		30.8	%		0.45	%		155,529,796		30.8	%
Savings				0.20	%		30,848,154		5.5	%		0.20	%		28,095,248		5.5	%
				0.42	%		452,098,463		74.4	%		0.29	%		393,673,761		77.9	%
Certificates:
0.00%	-	0.99%		0.69	%		46,771,850		7.7	%		0.54	%		57,349,324		11.3	%
1.00%	-	1.99%		1.39	%		104,284,007		17.3	%		1.28	%		54,319,296		10.8	%
2.00%	-	3.99%		2.00	%		4,210,030		0.7	%		2.14	%		20,369		0.0	%
				1.20	%		155,265,887		25.6	%		0.90	%		111,688,989		22.1	%
Total Deposits				0.62	%	$	607,364,350		100.0	%		0.43	%	$	505,362,750		100.0	%

Time Deposit Maturities [Table Text Block]

2018	$	105,487,705
2019		27,783,463
2020		11,807,481
2021		6,381,977
2022		3,508,356
Thereafter		296,905
	$	155,265,887

Summary Of Interest Expense On Deposits [Table Text Block]

	Years ended
	December 31,
	2017			2016			2015
NOW and Money Market accounts	$	2,394,549		$	1,235,359		$	1,276,808
Savings accounts		58,384			55,094			49,467
Certificate accounts		1,309,629			1,002,872			1,102,928
Early withdrawal penalties		(10,997	)		(9,343	)		(5,332	)
	$	3,751,565		$	2,283,982		$	2,423,871