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SHARE BASED COMPENSATION - Summary of Share Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Number of Common Shares        
Beginning balance (in shares)     65,279  
Granted (in shares)     0  
Converted options from Revere acquisition (in shares)     395,298  
Exercised (in shares) (1,575) (1,325) (10,213) (12,222)
Forfeited (in shares)     (765)  
Expired (in shares)     (703)  
Ending balance (in shares) 448,896   448,896  
Exercisable at end of period (in shares) 444,132   444,132  
Weighted Average Exercise Share Price        
Beginning balance (in dollars per share)     $ 31.34  
Granted (in dollars per share)     0  
Converted options from Revere acquisition (in dollars per share)     12.27  
Exercised (in dollars per share)     16.07  
Forfeited (in dollars per share)     39.02  
Expired (in dollars per share)     28.26  
Ending balance (in dollars per share) $ 14.89   14.89  
Exercisable at end of period (in dollars per share) $ 14.64   $ 14.64  
Weighted Average Contractual Remaining Life (Years)        
Balance at end of period     3 years 1 month 6 days  
Exercisable at end of period     3 years 1 month 6 days  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract]        
Beginning balance     $ 485  
Exercised     123  
Ending balance $ 4,383   4,383  
Exercisable at end of period $ 4,383   $ 4,383