Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Jun. 30, 2011
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.1	$ 0.1
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	40,619,000	40,273,000
Treasury stock, shares at cost	14,005,000	10,077,000