Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Unallocated ESOP Shares [Member]	Unallocated MRP Shares [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2017	$ 34,518	$ 36,949,508	$ 17,720,962	$ (1,754,632)		$ 152,579	$ 53,102,935
Net income			479,582				479,582
Other comprehensive income						(174,427)	(174,427)
Allocation of ESOP		21,269		44,504			65,773
Recognition and Retention Plan options exercised	140	64,995					65,135
Cash dividends paid			(372,379)				(372,379)
Repurchase shares	(503)	(706,555)					(707,058)
Balance at Mar. 31, 2018	34,155	36,329,217	17,828,165	(1,710,128)		(21,848)	52,459,561
Balance at Dec. 31, 2017	34,518	36,949,508	17,720,962	(1,754,632)		152,579	53,102,935
Net income							835,455
Balance at Jun. 30, 2018	34,002	36,138,342	18,022,135	(1,665,624)		(69,500)	52,459,355
Balance at Mar. 31, 2018	34,155	36,329,217	17,828,165	(1,710,128)		(21,848)	52,459,561
Net income			355,873				355,873
Other comprehensive income						(47,652)	(47,652)
Allocation of ESOP		20,502		44,504			65,006
Recognition and Retention Plan options exercised
Cash dividends paid			(161,903)				(161,903)
Repurchase shares	(153)	(211,377)					(211,530)
Balance at Jun. 30, 2018	34,002	36,138,342	18,022,135	(1,665,624)		(69,500)	52,459,355
Balance at Dec. 31, 2018	33,589	35,579,606	18,859,232	(1,576,616)	(40,361)	(31,084)	52,824,366
Net income			400,070				400,070
Other comprehensive income						190,615	190,615
Allocation of ESOP		19,595		44,504			64,099
Recognition and Retention Plan options exercised	25	8,900					8,925
Cash dividends paid			(201,110)				(201,110)
Repurchase shares	(249)	(347,331)					(347,580)
Compensation expense on MRP awards amortized					3,363		3,363
Balance at Mar. 31, 2019	33,365	35,260,770	19,058,192	(1,532,112)	(36,998)	159,531	52,942,748
Balance at Dec. 31, 2018	33,589	35,579,606	18,859,232	(1,576,616)	(40,361)	(31,084)	52,824,366
Net income							834,683
Balance at Jun. 30, 2019	32,233	33,614,487	18,125,450	(1,487,608)	(34,980)	310,038	50,559,620
Balance at Mar. 31, 2019	33,365	35,260,770	19,058,192	(1,532,112)	(36,998)	159,531	52,942,748
Net income			434,612				434,612
Other comprehensive income						150,507	150,507
Allocation of ESOP		18,280		44,504			62,784
Recognition and Retention Plan options exercised
Cash dividends paid			(1,367,354)				(1,367,354)
Repurchase shares	(1,132)	(1,664,563)					(1,665,695)
Compensation expense on MRP awards amortized					2,018		2,018
Balance at Jun. 30, 2019	$ 32,233	$ 33,614,487	$ 18,125,450	$ (1,487,608)	$ (34,980)	$ 310,038	$ 50,559,620