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FAIR VALUE OF FINANCIAL INSTRUMENTS - Fair Value Hierarchy (Details) (USD $)
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Liabilities:        
Deposits of cash outside the United States $ 307,600,000      
Cash and cash equivalents 347,097,000 227,826,000 122,060,000 76,361,000
Fair Value
        
Liabilities:        
Debt 72,254,000 [1] 76,129,000 [1]    
Level 1
        
Liabilities:        
Debt 0 [1] 0 [1]    
Level 2
        
Liabilities:        
Debt 72,254,000 [1] 76,129,000 [1]    
Level 3
        
Liabilities:        
Debt $ 0 [1] $ 0 [1]    
[1] Debt is carried at historical cost on the Company's consolidated balance sheet.