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SUBSEQUENT EVENTS - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Oct. 31, 2018
Dec. 31, 2018
Sep. 30, 2018
Sep. 30, 2017
Subsequent Event [Line Items]        
Insurance Settlements Receivable     $ 17.8  
Loss from Catastrophes     $ 6.9 $ 13.6
Scenario, Forecast [Member]        
Subsequent Event [Line Items]        
Unusual or Infrequent Item, or Both, Gain, Gross   $ 15.2    
Loss from Catastrophes   $ 7.0    
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Unusual or Infrequent Item, or Both, Insurance Proceeds $ 40.0