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INTANGIBLE ASSETS (Estimated Amortization Expense for Amortized Intangible Assets) (Detail)
$ in Thousands
Sep. 30, 2017
USD ($)
Intangible Assets [Line Items]  
2018 $ 9,495
2019 8,574
2020 6,186
2021 5,389
2022 4,943
Thereafter 22,070
Becker and ACAMS [Member]  
Intangible Assets [Line Items]  
2018 6,501
2019 6,422
2020 4,671
2021 4,440
2022 4,300
Thereafter 15,386
Adtalem Brazil [Member]  
Intangible Assets [Line Items]  
2018 2,994
2019 2,152
2020 1,515
2021 949
2022 643
Thereafter $ 6,684