CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares	Dec. 31, 2015	Jun. 30, 2015
Statement of Financial Position [Abstract]
Common stock authorized (in shares)	100,000,000	100,000,000
Common stock issued (in shares)	55,242,681	55,234,942
Common stock outstanding (in shares)	47,605,180	50,318,244
Common stock in treasury (in shares)	7,637,501	4,916,698