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STOCK-BASED COMPENSATION (Summary of Restricted Stock Units Activity) (Detail) - Restricted Stock Units (RSUs) [Member] - $ / shares
3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Restricted Stock Units Outstanding at beginning of period 1,226,958  
Restricted Stock Units Outstanding, Shares Granted 199,750  
Restricted Stock Units Outstanding, Shares Vested (362,494)  
Restricted Stock Units Outstanding, Shares Forfeited (4,947)  
Restricted Stock Units Outstanding at end of period 1,059,267  
Weighted Average Grant Date Fair Value, Nonvested beginning balance $ 28.31  
Weighted Average Grant Date Fair Value, Shares Granted 49.03 $ 33.90
Weighted Average Grant Date Fair Value, Shares Vested 26.85  
Weighted Average Grant Date Fair Value, Shares Forfeited 32.79  
Weighted Average Grant Date Fair Value, Nonvested ending balance $ 32.69