Quarterly report pursuant to Section 13 or 15(d)

Equity-Based Compensation - Additional Information (Detail)

v3.20.1
Equity-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2020
May 31, 2019
Oct. 31, 2018
May 31, 2016
Aug. 31, 2015
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Nov. 02, 2012
Non-Qualified Stock Options                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock units granted   60,742 105,398            
Restricted stock units\non-qualified stock options, granted description           One third of the NQOs will vest and become exercisable on each of the first, second and third anniversaries of the grant date.      
Fair value assumptions, strike price   $ 14.54 $ 13.97            
Fair value assumptions, risk free rate   2.32% 2.94%            
Fair value assumptions, expiration   5 years 5 years            
Fair value assumptions, volatility   34.20% 32.70%            
Compensation expense forfeiture rate   1.00% 1.00%            
Compensation expense             $ 842    
Unrecognized compensation expense related to unvested awards               $ 945  
Recognition period of unrecognized compensation expense related to unvested awards               1 year 7 months 13 days  
Restricted Stock Units                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock units granted           8,242    
Compensation expense           $ 108      
Unrecognized compensation expense related to unvested awards $ 933         $ 933      
Recognition period of unrecognized compensation expense related to unvested awards           1 year 7 months 17 days      
2012 Equity Incentive Plan                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Shares reserved for issuance 481,307         481,307      
Shares reserved for issuance, authorized                 1,687,500
Restricted stock units granted       3,791 966,510        
Fair Value per unit       $ 13.19 $ 13.23        
Restricted stock units\non-qualified stock options, granted description           Twenty-five percent of the RSUs granted vest and settle on each of the first, second, third and fourth anniversaries of the grant date.      
2012 Equity Incentive Plan | Employee                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock units granted   34,388   7,582          
Fair Value per unit   $ 14.54   $ 13.19          
Restricted stock units\non-qualified stock options, granted description           Twenty-five percent of the RSUs granted vest and settle on each of the first, second, third and fourth anniversaries of the grant date      
2012 Equity Incentive Plan | Board of Directors                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock units granted 8,242     3,000          
Fair Value per unit $ 11.83     $ 13.19   $ 11.83      
Restricted stock units\non-qualified stock options, granted description           One hundred percent of the RSUs granted vested and settled on the first anniversary of the grant date.      
2012 Equity Incentive Plan | Board of Directors | Restricted Stock Units                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock units\non-qualified stock options, granted description           All of the RSUs granted vest on the third anniversary of the grant date      
2012 Equity Incentive Plan | First Anniversary                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage       25.00% 25.00%        
2012 Equity Incentive Plan | First Anniversary | Employee                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage   25.00%   25.00%          
2012 Equity Incentive Plan | First Anniversary | Board of Directors                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage 0.33%     100.00%          
2012 Equity Incentive Plan | Second Anniversary                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage       25.00% 25.00%        
2012 Equity Incentive Plan | Second Anniversary | Employee                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage   25.00%   25.00%          
2012 Equity Incentive Plan | Second Anniversary | Board of Directors                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage 0.33%                
2012 Equity Incentive Plan | Third Anniversary                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage       25.00% 25.00%        
2012 Equity Incentive Plan | Third Anniversary | Employee                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage   25.00%   25.00%          
2012 Equity Incentive Plan | Third Anniversary | Board of Directors                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage 0.33%                
2012 Equity Incentive Plan | Fourth Anniversary                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage       25.00% 25.00%        
2012 Equity Incentive Plan | Fourth Anniversary | Employee                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage   25.00%   25.00%          
2012 Equity Incentive Plan | Fourth Anniversary | Board of Directors                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage 0.33%