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Earnings Per Share of Common Stock - Computation of Basic and Diluted Earnings (Loss) Per Common Share (Detail) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share [Abstract]                      
Net income (loss) $ 367,865 $ 206,395 $ (30,289) $ 24,574 $ 54,668 $ 100,375 $ (301,094) $ 20,918 $ 568,545 $ (125,133) $ (1,224,683)
WEIGHTED AVERAGE SHARES OF COMMON STOCK OUTSTANDING - basic and diluted 9,282,280 9,060,314 8,439,855 7,753,717 7,735,354 6,605,264 6,530,264 6,530,264 8,639,397 6,852,917 6,214,557
Basic and diluted earnings (loss) per common share $ 0.04 $ 0.02   $ 0.01 $ 0.01 $ 0.02 $ (0.05)   $ 0.07 $ (0.02) $ (0.20)