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STOCK BASED COMPENSATION - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Sep. 30, 2017
Dec. 31, 2016
Service-based Restricted Stock | Non-Employee Directors          
Stock Based Compensation [Line Items]          
Share based compensation award shares granted in period (in shares)   37,464      
Share based compensation award granted in period grant-date fair value (in USD)   $ 0.8      
Share based compensation award vesting period from date of grant (in years)   1 year      
Service-based Restricted Stock | Service Based Awards | Employees And Executives          
Stock Based Compensation [Line Items]          
Share based compensation award shares granted in period (in shares) 17,548     248,395  
Share based compensation award granted in period grant-date fair value (in USD) $ 0.3     $ 5.5  
Share based compensation award vesting period from date of grant (in years)       1 year  
Service-based Restricted Stock | Service Based Awards | Employees And Executives | Annual installment          
Stock Based Compensation [Line Items]          
Share based compensation award annual installment vesting rate 25.00%     25.00%  
Performance-based Restricted Stock          
Stock Based Compensation [Line Items]          
Share based compensation award shares granted in period (in shares)     110,678    
Share based compensation award granted in period grant-date fair value (in USD)     $ 2.4    
Share based compensation award vesting period from date of grant (in years)       3 years  
Share based compensation award end date of the three-year performance period       Dec. 31, 2019  
Performance-based Restricted Stock | Performance Period 2014 to 2016          
Stock Based Compensation [Line Items]          
Share based compensation performance-based restricted stock awards, grant date         Feb. 24, 2014
Share based compensation award shares earned in period (in shares)         59,437
Share based compensation dividend earned on shares subject to the awards (in shares)         4,945
Share based compensation award forfeited shares (in shares)     21,503