SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Cash and Cash Equivalents and Concentration of Risk (Details) (USD $)	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Accounting Policies [Abstract]
Cash and cash equivalents	$ 227,826,000	$ 122,060,000	$ 76,361,000	$ 28,415,000
Deposits of cash outside the United States	$ 210,400,000	$ 102,800,000
Credit terms - lower limit	30 days
Credit terms - upper limit	60 days