Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Unearned ESOP Shares [Member]	Total
Balance at Dec. 31, 2015	$ 168,513	$ 9,713,894	$ 20,404,880	$ (216,047)	$ (139,332)	$ (288,184)	$ 29,643,724
Net income			5,295,127				5,295,127
Unrealized gain (loss) on available-for-sale securities				(147,390)			(147,390)
Amortization of equity awards		13,167				35,533	48,700
Second-step conversion and stock offering	(134,131)	17,434,795			139,332	(1,503,580)	15,936,416
Balance at Dec. 31, 2016	34,382	27,161,856	25,700,007	(363,437)	0	(1,756,231)	50,776,577
Net income			360,591				360,591
Unrealized gain (loss) on available-for-sale securities				89,171			89,171
Amortization of equity awards		47,577				55,859	103,436
Stock option exercise	57	55,257					55,314
Restricted stock awards	748	(748)
Share repurchase	(280)	(414,120)					(414,400)
Balance at Dec. 31, 2017	$ 34,907	$ 26,849,822	$ 26,060,598	$ (274,266)	$ 0	$ (1,700,372)	$ 50,970,689