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Significant Accounting Policies - Concentration of Credit Risk (Details) - customer_receivable_balance
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Concentration of Credit Risk    
Maturity period of marketable securities, maximum 2 months  
Number of customer's receivables balance representing a concentration 2 1
Accounts and installments receivable | Customers concentration risk    
Concentration of Credit Risk    
Percentage of total receivables   11.00%
Customer One | Accounts and installments receivable | Customers concentration risk    
Concentration of Credit Risk    
Percentage of total receivables 10.00%  
Customer Two | Accounts and installments receivable | Customers concentration risk    
Concentration of Credit Risk    
Percentage of total receivables 15.00%