Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Statement of Financial Position [Abstract]
Accounts receivable trade, allowance for doubtful accounts	$ 5,987	$ 4,727
Common stock, shares outstanding (in shares)	122,293,986	121,758,432
Common stock, shares issued (in shares)	122,293,986	121,758,432
Treasury stock, shares (in shares)	625,725	763,278