Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS)

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CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]        
Net income $ 395,474 $ 18,089 $ 454,601 $ 3,822
Other comprehensive loss        
Unrealized loss on investment in equity securities   (46,926)   (92,589)
Comprehensive gain (loss) $ 395,474 $ (28,837) $ 454,601 $ (88,767)