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INTANGIBLE ASSETS - Additional Information (Detail)
$ in Thousands
1 Months Ended 3 Months Ended
May 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
segment
Sep. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]        
Number of reporting units | segment   4    
Amortization of Intangible Assets   $ 2,534 $ 1,605  
Intangible assets from business combinations   295,324 240,166 $ 297,989
Goodwill   $ 686,992 $ 627,239 $ 687,256
Percentage of intangible assets including Goodwill   40.00%    
Goodwill write-off $ 0 $ 0