LONG-TERM DEBT (Details) (USD $)	12 Months Ended		12 Months Ended										12 Months Ended				12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Interest rate swap agreement maturing on September 26, 2012	Jun. 30, 2012 Interest rate swap agreement maturing on May 13, 2016	Jun. 30, 2012 Revolving credit facility	Jun. 30, 2011 Revolving credit facility	Jun. 30, 2012 Term loan facility	Jun. 30, 2011 Term loan facility	Jun. 30, 2012 Other, generally unsecured	Jun. 30, 2011 Other, generally unsecured	Jun. 30, 2012 New Credit Facility	Apr. 15, 2011 New Credit Facility	Jun. 30, 2012 New Credit Facility Leverage ratio greater than 2.5	Jun. 30, 2012 New Credit Facility Leverage ratio between 2.0 and 2.5	Jun. 30, 2012 New Credit Facility Leverage ratio between 2.0 and 2.5 Minimum	Jun. 30, 2012 New Credit Facility Leverage ratio between 2.0 and 2.5 Maximum	Jun. 30, 2012 New Credit Facility Leverage ratio between 1.5 and 2.0	Jun. 30, 2012 New Credit Facility Leverage ratio between 1.5 and 2.0 Minimum	Jun. 30, 2012 New Credit Facility Leverage ratio between 1.5 and 2.0 Maximum	Jun. 30, 2012 New Credit Facility Leverage ratio between 1.0 and 1.5	Jun. 30, 2012 New Credit Facility Leverage ratio between 1.0 and 1.5 Minimum	Jun. 30, 2012 New Credit Facility Leverage ratio between 1.0 and 1.5 Maximum	Jun. 30, 2012 New Credit Facility Leverage ratio below 1.0	Jun. 30, 2012 New Credit Facility Leverage ratio below 1.0 Maximum	Apr. 15, 2011 New Credit Facility, term loan Y	Jun. 30, 2012 New Credit Facility, term loan Quarterly principal reduction through March 2013	Jun. 30, 2012 New Credit Facility, term loan Quarterly principal reduction from June 2013 through March 2014	Jun. 30, 2012 New Credit Facility, term loan Quarterly principal reduction from June 2014 through May 2016	Jun. 30, 2012 New Credit Facility, term loan Principal reduction May 2016	Jun. 30, 2012 New Credit Facility, revolving credit	Jun. 30, 2011 New Credit Facility, revolving credit	Apr. 15, 2011 New Credit Facility, revolving credit Y
Components of long-term debt
Long-term debt	$ 511,466,000	$ 515,403,000			$ 230,000,000	$ 219,000,000	$ 281,250,000	$ 296,250,000	$ 216,000	$ 153,000
Less current maturities	(17,091,000)	(15,153,000)
Long-term debt, net of current maturities	494,375,000	500,250,000
Total undrawn revolver capacity																														170,000,000	181,000,000
Overall capacity of senior secured credit facility												700,000,000													300,000,000
Maximum borrowing capacity																																400,000,000
Term of facility (in years)																									5							5
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	LIBOR			LIBOR			LIBOR			LIBOR
Debt, margin on LIBOR rate (as a percent)													2.00%	1.75%			1.50%			1.25%			1.00%
Leverage ratio											1.8		2.5		2.0	2.5		1.5	2.0		1.0	1.5		1.0
Effective interest rate after giving effect to the floating-to-fixed interest rate swaps (as a percent)					1.75%	2.29%	3.58%	3.82%
Effective interest rate exclusive of the effect of the floating-to-fixed interest rate swaps (as a percent)							1.50%	1.75%
Principal reduction amount																										3,750,000	5,625,000	7,500,000	187,500,000
Variable interest rate description before hedging of debt	LIBOR		LIBOR	LIBOR
Notional amount of interest rate swap	281,300,000	296,300,000	218,800,000	165,000,000
Effective interest rate for hedged variable rate debt (as a percent)			1.89%	2.09%
Amounts expected to be reclassified from other comprehensive income to interest expense in the next twelve months	$ 4,800,000