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FINANCING RECEIVABLES - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Financing Receivables [Line Items]      
Number of days past due, to consider loans as nonperforming 120 days    
Financing Receivable Allowance For Credit Losses $ 12,071 $ 20,800 $ 20,630
Notes Receivable Gross 59,489 69,825  
Federal Trade Commission Settlement Agreement [Member] | Institutional Loan [Member]      
Financing Receivables [Line Items]      
Financing Receivable Allowance For Credit Losses 13,400    
Notes Receivable Gross 17,500    
Forgivable Of Loan 12,900    
Nonperforming loan      
Financing Receivables [Line Items]      
Impaired Financing Receivable, with Related Allowance, Recorded Investment 10,800 19,800  
Impaired Financing Receivable, Related Allowance 10,700 19,700  
Accounts Receivable      
Financing Receivables [Line Items]      
Net Institutional Student Loans, classified as Accounts Receivable 20,800 21,700  
Other Assets      
Financing Receivables [Line Items]      
Net Institutional Student Loans, classified as Other Assets $ 26,600 $ 27,300