Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - MBO Bonus Plan - Additional Information (Detail)

v3.19.2
Commitments and Contingencies - MBO Bonus Plan - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Executive Officers [Member]        
Commitments And Contingencies [Line Items]        
Accrued bonus expense $ 209,675 $ 492,818 $ 524,188 $ 760,114