LONG-TERM DEBT (Details 2) (USD $)	12 Months Ended						12 Months Ended
	Jun. 30, 2013	Jun. 30, 2013 Accrued and other liabilities	Jun. 30, 2013 Other liabilities	Jun. 30, 2013 Interest rate swap Cash flow hedging	Jun. 30, 2012 Interest rate swap Cash flow hedging	Jun. 30, 2013 Interest rate swap agreement maturing on September 26, 2012 Cash flow hedging	Jun. 30, 2013 Interest rate swap agreement maturing on May 13, 2016	Jun. 30, 2013 Interest rate swap agreement maturing on May 13, 2016 Cash flow hedging
Interest rate swap agreement
Notional amount of interest rate swap				$ 264,400,000	$ 281,300,000	$ 218,800,000		$ 165,000,000
Variable interest rate description before hedging of debt							LIBOR
Effective interest rate for hedged variable rate debt (as a percent)							2.09%
Amounts expected to be reclassified from other comprehensive income to interest expense	4,700,000
Fair value of interest rate swap liability	9,616,000	4,689,000	4,927,000
Annual principal maturities of the Company's long-term debt
2014	24,615,000
2015	30,000,000
2016	27,500,000
2017	20,000,000
2018	502,500,000
Total	$ 604,615,000