LONG-TERM DEBT (Details) (USD $)			9 Months Ended								9 Months Ended		9 Months Ended			9 Months Ended
	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2012 Interest rate swap agreement maturing on September 26, 2012	Mar. 31, 2012 Interest rate swap agreement maturing on May 13, 2016	Mar. 31, 2012 Revolving credit facility	Jun. 30, 2011 Revolving credit facility	Mar. 31, 2012 Term loan facility	Jun. 30, 2011 Term loan facility	Mar. 31, 2012 Other, generally unsecured	Jun. 30, 2011 Other, generally unsecured	Mar. 31, 2012 New Credit Facility	Apr. 15, 2011 New Credit Facility	Mar. 31, 2012 New Credit Facility Minimum	Mar. 31, 2012 New Credit Facility Maximum	Apr. 15, 2011 New Credit Facility, term loan Y	Mar. 31, 2012 New Credit Facility, term loan Quarterly principal reduction through March 2013	Mar. 31, 2012 New Credit Facility, term loan Quarterly principal reduction from June 2013 through March 2014	Mar. 31, 2012 New Credit Facility, term loan Quarterly principal reduction from June 2014 through May 2016	Mar. 31, 2012 New Credit Facility, term loan Principal reduction May 2016	Mar. 31, 2012 New Credit Facility, revolving credit	Apr. 15, 2011 New Credit Facility, revolving credit Y
Components of long-term debt
Long-term debt	$ 484,211,000	$ 515,403,000			$ 199,000,000	$ 219,000,000	$ 285,000,000	$ 296,250,000	$ 211,000	$ 153,000
Less current maturities	(15,211,000)	(15,153,000)
Long-term debt, net of current maturities	469,000,000	500,250,000
Total undrawn revolver capacity																				201,000,000
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
Debt, margin on LIBOR rate, low end of range (as a percent)													1.25%
Debt, margin on LIBOR rate, high end of range (as a percent)														2.00%
Variable interest rate description before hedging of debt			LIBOR	LIBOR
Notional amount of interest rate swap			218,800,000	165,000,000
Effective interest rate for hedged variable rate debt (as a percent)			1.89%	2.09%
Effective interest rate after giving effect to the floating-to-fixed interest rate swaps (as a percent)					1.75%		3.58%
Quarterly principal reductions, percentage of original principal amount																1.25%	1.875%	2.50%
Principal reduction amount																$ 3,750,000	$ 5,625,000	$ 7,500,000	$ 187,500,000