SEGMENT AND GEOGRAPHICAL INFORMATION (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Revenues, operating income and identifiable assets by geographic region
Revenues	$ 228,540	$ 190,941	$ 633,964	$ 544,475
Operating income	50,227	37,902	130,657	107,621
United States and Canada
Revenues, operating income and identifiable assets by geographic region
Revenues	187,108	155,274	516,601	449,764
Operating income	43,892	34,557	118,326	96,644
International
Revenues, operating income and identifiable assets by geographic region
Revenues	41,432	35,667	117,363	94,711
Operating income	$ 6,335	$ 3,345	$ 12,331	$ 10,977