LONG-TERM DEBT (Details) (USD $)			9 Months Ended				0 Months Ended			0 Months Ended			9 Months Ended
	Mar. 31, 2013	Jun. 30, 2012	Mar. 31, 2013 2011 Credit Agreement Senior Secured Credit Facility	Apr. 15, 2011 2011 Credit Agreement Senior Secured Credit Facility	Mar. 31, 2013 2011 Credit Agreement Senior Secured Credit Facility Minimum	Mar. 31, 2013 2011 Credit Agreement Senior Secured Credit Facility Maximum	Apr. 15, 2011 2011 Credit Agreement Revolving credit facility	Mar. 31, 2013 2011 Credit Agreement Revolving credit facility	Jun. 30, 2012 2011 Credit Agreement Revolving credit facility	Apr. 15, 2011 2011 Credit Agreement Term loan facility	Mar. 31, 2013 2011 Credit Agreement Term loan facility	Jun. 30, 2012 2011 Credit Agreement Term loan facility	Mar. 31, 2013 2011 Credit Agreement Term loan facility Quarterly principal reduction through March 2013	Mar. 31, 2013 2011 Credit Agreement Term loan facility Quarterly principal reduction from June 2013 through March 2014	Mar. 31, 2013 2011 Credit Agreement Term loan facility Quarterly principal reduction from June 2014 through May 2016	Mar. 31, 2013 2011 Credit Agreement Term loan facility Principal reduction May 2016	Mar. 31, 2013 2011 Credit Agreement Other, generally unsecured	Jun. 30, 2012 2011 Credit Agreement Other, generally unsecured
Components of long-term debt
Long-term debt	$ 490,247,000	$ 511,466,000						$ 220,000,000	$ 230,000,000		$ 270,000,000	$ 281,250,000					$ 247,000	$ 216,000
Less current maturities	(22,747,000)	(17,091,000)
Long-term debt, net of current maturities	467,500,000	494,375,000
Total undrawn revolver capacity								180,000,000	170,000,000
Overall capacity of senior secured credit facility				700,000,000
Maximum borrowing capacity							400,000,000			300,000,000
Term of facility							5 years			5 years
Sublimit under the revolving credit facility related to standby letters of credit							50,000,000
Sublimit under the revolving credit facility related to swingline loans							10,000,000
Sublimit under the revolving credit facility related to multicurrency borrowings							150,000,000
Variable rate basis			LIBOR
Debt, margin on LIBOR rate (as a percent)					1.00%	2.00%
Effective interest rate after giving effect to the floating-to-fixed interest rate swaps (as a percent)								1.70%	1.75%		3.59%	3.58%
Principal reduction amount													$ 3,750,000	$ 5,625,000	$ 7,500,000	$ 187,500,000