Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation - Summary of RSU Grants (Detail)

v3.7.0.1
Equity-Based Compensation - Summary of RSU Grants (Detail) - Restricted Stock Units - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Beginning Balance, Units 966,510  
Granted 14,373 966,510
Ending Balance, Units 739,256 966,510
Vested (241,627)  
Fair Value per unit $ 13.23  
Fair Value per unit, Granted 13.19 $ 13.23
Fair Value per unit   $ 13.23
Fair Value per unit, Vested (13.23)  
Minimum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Fair Value per unit 13.19  
Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Fair Value per unit $ 13.23