Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Accounts receivable, allowance for doubtful accounts	$ 1,852	$ 1,479
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	70,935,098	70,223,286
Treasury stock, shares	9,481,963	8,011,733