(Unaudited Condensed) Statements of Comprehensive (Loss) Income - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statements of Other Comprehensive Income [Abstract]
Net (loss) income	$ (221,123)	$ 584,242
Other comprehensive income:
Interest rate swaps, before taxes	58,625	15,735
Income tax applicable to interest rate swaps	(14,766)	(5,665)
Other comprehensive income, net of taxes	43,859	10,070
Total comprehensive (loss) income	$ (177,264)	$ 594,312