Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.8.0.1
Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Income Tax Disclosure [Abstract]    
Income tax expenses $ 145,697 $ 959,406
Effective tax rate 3.97% 3.97%