Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation - Additional Information (Detail)

v3.20.4
Equity-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
May 31, 2020
Mar. 31, 2020
May 31, 2019
Oct. 31, 2018
May 31, 2016
Aug. 31, 2015
Dec. 31, 2020
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 86,764   60,742 105,398          
Restricted stock units\non-qualified stock options, granted description       One third of the NQOs will vest and settle on each of the first, second and third anniversaries of the grant date.     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 $ 10.18   $ 14.54 $ 13.97          
Fair value assumptions, risk free rate 0.64%   2.32% 2.94%          
Fair value assumptions, expiration 10 years   5 years 5 years          
Fair value assumptions, volatility 48.00%   34.20% 32.70%          
Compensation expense forfeiture rate 1.00%   1.00% 1.00%          
Compensation expense             $ 659 $ 2,272  
Unrecognized compensation expense related to unvested awards             $ 1,342 $ 945  
Recognition period of unrecognized compensation expense related to unvested awards             1 year 5 months 8 days 1 year 7 months 13 days  
Restricted Stock Units                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Compensation expense             $ 659 $ 2,272  
Unrecognized compensation expense related to unvested awards             $ 1,342 $ 945  
Recognition period of unrecognized compensation expense related to unvested awards             1 year 5 months 8 days 1 year 7 months 13 days  
2012 Equity Incentive Plan                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Shares reserved for issuance             345,428 489,549  
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 49,116   34,388   7,582        
Fair Value per unit $ 10.11   $ 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 | Employee | Restricted Stock Units                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
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              
Fair Value per unit   $ 11.83              
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 | Board of Directors                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock units granted         3,000        
Fair Value per unit         $ 13.19        
Restricted stock units\non-qualified stock options, granted description             One hundred percent of the RSUs granted vest and settle on the first 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%   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%              
2012 Equity Incentive Plan | First Anniversary | Board of Directors                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Restricted stock, vesting percentage         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%   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%   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%   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%