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STOCK BASED COMPENSATION - Summary of RSU activity (Detail) - Restricted stock units(1)
 9 Months Ended
Mar. 31, 2017
$ / shares
shares
Number of Shares  
Non-vested RSUs, beginning balance (in shares) | shares 271,971
RSUs granted (in shares) | shares 72,023
RSUs vested (in shares) | shares (109,124)
RSUs canceled (in shares) | shares (42,685)
Non-vested RSUs, ending balance (in shares) | shares 192,185
Weighted Average Grant Date Fair Value Per Share  
Non-vested RSUs, weighted average grant date fair value, beginning balance (in usd per share) | $ / shares $ 28.72
RSUs granted, weighted average grant date fair value (in usd per share) | $ / shares 55.33
RSUs vested, weighted average grant date fair value (in usd per share) | $ / shares 24.71
RSUs canceled, weighted average grant date fair value (in usd per share) | $ / shares 33.44
Non-vested RSUs, weighted average grant date fair value, ending balance (in usd per share) | $ / shares $ 39.53