Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Performance Share Units - Additional Information (Detail)

v3.21.2
Stock Based Compensation - Performance Share Units - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Performance Share Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Allocated share-based compensation expense $ 2,695,847 $ (88,348) $ 2,695,847 $ (88,348)
Employee service share-based compensation, nonvested awards, compensation not yet recognized, share-based awards other than options $ 1,198,389   $ 1,198,389  
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition     6 months  
2015 Performance Share Unit Plan [Member] | Employee [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period     1,465,713