DEBT (Details) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended
	Feb. 29, 2012	Dec. 31, 2011	Mar. 31, 2012	Mar. 31, 2011	Jun. 30, 2011
Current and non-current debt
Term loan, current			$ 15,600,000		$ 15,600,000
Total debt, current			15,600,000		15,600,000
Credit facility, non-current					100,000,000
Term loan, non-current			98,800,000		110,500,000
Total debt, non-current			98,800,000		210,500,000
Borrowing from credit facility		100,000,000	100,000,000	19,500,000
Outstanding revolving credit facility		170,000,000
Repayments under revolving credit facility	170,000,000
Amount available under revolving credit facility			$ 225,000,000