Derivatives (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Apr. 13, 2017	Aug. 24, 2015	Dec. 30, 2014	Oct. 15, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amount of Interest Rate Cash Flow Hedge Derivatives				$ 25,000,000	$ 25,000,000	$ 25,000,000	$ 25,000,000
Interest expense on derivatives	$ 406,200	$ 668,300	$ 763,500