CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 59,126	$ (14,266)
Other comprehensive income (loss)
Unrealized loss on investment securities in equity securities		(45,663)
Comprehensive gain (loss)	$ 59,126	$ (59,929)