Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation - Summary of Activity Related to PSUs (Detail)

v3.20.1
Stock Based Compensation - Summary of Activity Related to PSUs (Detail) - Performance Shares [Member] - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
PSUs granted 434,000 0
PSUs forfeited (6,000)  
PSUs / DSUs vested 0  
Number of Options, Outstanding 428,000  
Weighted Average Grant Date Fair Value, PSUs granted $ 2.09  
Weighted Average Grant Date Fair Value, PSUs forfeited 2.09  
Weighted Average Grant Date Fair Value, PSUs vested 0  
Weighted Average Grant Date Fair Value, Ending Balance $ 2.09