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FINANCING RECEIVABLES - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Sep. 30, 2016
Jun. 30, 2016
Financing Receivables [Line Items]        
Number of days past due, to consider loans as nonperforming 120 days      
Financing Receivable Allowance For Credit Losses $ 12,963 $ 12,071 $ 21,457 $ 20,800
Notes Receivable Gross 59,788 59,489 71,669  
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 11,700 10,800 20,400  
Impaired Financing Receivable, Related Allowance 11,500 10,700 20,200  
Accounts Receivable        
Financing Receivables [Line Items]        
Net Institutional Student Loans, classified as Accounts Receivable 19,900 20,800 23,000  
Other Assets        
Financing Receivables [Line Items]        
Net Institutional Student Loans, classified as Other Assets $ 26,900 $ 26,600 $ 27,200