SEGMENT AND GEOGRAPHICAL INFORMATION (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Revenues, operating income and identifiable assets by geographic region
Revenues	$ 210,457	$ 182,726	$ 405,424	$ 353,534
Operating income	43,039	35,715	80,430	69,719
United States and Canada
Revenues, operating income and identifiable assets by geographic region
Revenues	170,766	148,778	329,492	294,490
Operating income	38,693	30,462	74,433	62,087
International
Revenues, operating income and identifiable assets by geographic region
Revenues	39,691	33,948	75,932	59,044
Operating income	$ 4,346	$ 5,253	$ 5,997	$ 7,632