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Stock-based Compensation - Summary of PSU Activity (Detail) (Potential Performance Shares (PSU)) - Performance Share Units (PSU) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]      
Beginning balance, number of units, outstanding 1,136,488    
Number of units, granted 220,929 232,000 619,000
Number of unit, forfeitures (307,507)    
Ending balance, number of units, outstanding 1,049,910 1,136,488  
Beginning balance, weighted average grant price, outstanding $ 9.33    
Weighted average grant price, granted 8.56 $ 8.37 $ 7.85
Weighted average grant price, forfeitures 12.93    
Ending balance, weighted average grant price, outstanding $ 8.11 $ 9.33  
Number of PSUs granted 220,929 232,000 619,000
Grant date fair value $ 1,891 $ 1,943 $ 4,857
Grant date fair value per unit $ 8.56 $ 8.37 $ 7.85
Compensation expense recognized for PSUs $ 3,392 $ 3,217 $ 1,899
Unrecognized compensation expense related to unvested shares $ 3,444    
Expected recognition period 1 year 7 months 6 days