Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2012	Jun. 30, 2012
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.04	$ 0.04
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	20,135,107	20,135,107
Common stock, shares outstanding	15,194,952	15,292,448
Treasury stock, shares	4,940,145	4,842,659