Annual report pursuant to Section 13 and 15(d)

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

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Equity-Based Compensation - Summary of NQO Grants (Detail) - Non-Qualified Stock Options - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Beginning Balance, Units 105,398  
Ending Balance, Units 166,140 105,398
Fair Value per unit $ 13.97  
Fair Value per unit   $ 13.97
Minimum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Fair Value per unit 13.97  
Maximum    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Fair Value per unit $ 14.54  
Granted in October 2018    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Granted, Units   105,398
Fair Value per unit, Granted   $ 13.97
Granted in May 2019    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Granted, Units 60,742  
Fair Value per unit, Granted $ 14.54