STOCK-BASED COMPENSATION (Details) (USD $)	3 Months Ended	9 Months Ended
Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Stock-based compensation expense.
Stock-based compensation expense	$ 1,494,000	$ 1,803,000	$ 5,560,000	$ 5,010,000
Stock Options
Stock-based compensation expense.
Stock-based compensation expense	111,000	81,000	349,000	325,000
Granted (in shares)			18,796	24,800
Unrecognized stock-based compensation expense
Unrecognized stock-based compensation expense related to non-vested awards	600,000		600,000
Weighted-average period of recognition of unrecognized stock-based compensation expenses of non-vested awards (in years)			1.89
Stock Appreciation Rights
Stock-based compensation expense.
Stock-based compensation expense	297,000	220,000	921,000	588,000
Granted (in shares)			42,804	51,500
Unrecognized stock-based compensation expense
Unrecognized stock-based compensation expense related to non-vested awards	1,500,000		1,500,000
Weighted-average period of recognition of unrecognized stock-based compensation expenses of non-vested awards (in years)			1.79
Restricted Stock
Stock-based compensation expense.
Stock-based compensation expense	572,000	389,000	2,223,000	1,659,000
Granted (in shares)			44,950	53,100
Unrecognized stock-based compensation expense
Unrecognized stock-based compensation expense related to non-vested awards	6,000,000		6,000,000
Weighted-average period of recognition of unrecognized stock-based compensation expenses of non-vested awards (in years)			3.83
Performance Shares
Stock-based compensation expense.
Stock-based compensation expense	514,000	1,113,000	2,067,000	2,438,000
Granted (in shares)			49,600	60,500
Vested (in shares)	12,400	11,500	26,775	86,000
Vested (in dollars per share)	$ 68.18	$ 29.75	$ 58.24	$ 29.75
Unrecognized stock-based compensation expense
Unrecognized stock-based compensation expense related to non-vested awards	$ 2,200,000		$ 2,200,000
Weighted-average period of recognition of unrecognized stock-based compensation expenses of non-vested awards (in years)			1.64

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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