INCOME TAXES (Details) (USD $)	3 Months Ended			9 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2012
INCOME TAXES
Income tax expense	$ 18,286,000		$ 14,864,000	$ 51,062,000	$ 41,297,000
Effective tax rate (as a percent)	72.60%		35.60%	46.10%	34.80%
Increase in effective tax rate due to the recording of a valuation allowance on a deferred tax asset (as a percent)	20.30%			3.60%
Income tax expense resulting from an error identified as part of the annual provision-to-return true-up process	3,100,000
Total gross unrecognized tax benefits	20,200,000			20,200,000		19,500,000
Accrued income-tax-related interest and penalties	3,800,000			3,800,000		2,800,000
Foreign withholding tax proceeds (payments)	8,500,000	(17,200,000)
Income tax receivable related to foreign withholding tax	$ 8,700,000			$ 8,700,000