LONG-TERM DEBT (Details 2) (USD $)	9 Months Ended	12 Months Ended
	Mar. 31, 2013	Jun. 30, 2012
Interest rate swap agreement
Notional amount of interest rate swap	$ 270,000,000	$ 281,300,000
Variable interest rate description before hedging of debt	LIBOR
Interest rate swap agreement, Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion)	(9,000)	0
Amounts expected to be reclassified from other comprehensive income to interest expense	4,800,000
Fair value of interest rate swap liability	11,873,000
Accrued and other liabilities
Interest rate swap agreement
Fair value of interest rate swap liability	4,816,000
Other liabilities
Interest rate swap agreement
Fair value of interest rate swap liability	7,057,000
Interest rate swap agreement maturing on September 26, 2012
Interest rate swap agreement
Notional amount of interest rate swap	218,800,000
Variable interest rate description before hedging of debt	LIBOR
Effective interest rate for hedged variable rate debt (as a percent)	1.89%
Interest rate swap agreement maturing on May 13, 2016
Interest rate swap agreement
Notional amount of interest rate swap	$ 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%