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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - shares
Mar. 31, 2018
Jun. 30, 2017
Statement of Financial Position [Abstract]    
Common stock authorized (in shares) 100,000,000 100,000,000
Common stock issued (in shares) 55,480,760 55,349,658
Common stock outstanding (in shares) 46,928,592 46,753,180
Common stock in treasury (in shares) 8,552,168 8,596,478