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STOCK-BASED COMPENSATION (2) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Number of Shares/Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance 2,683,127    
Weighted - Average Grant-Date Fair Value per Share      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance $ 14.79    
Total Compensation Cost $ 39,700    
Performance Restricted Stock Units And Long Term Incentive Plan Units [Member]      
Number of Shares/Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance 1,360,780 1,073,998 913,087
Granted 1,012,032 685,064 679,549
Cancelled 0 (5,361)  
Forfeited (203,380) (392,921) (518,638)
Vested 0 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance 2,169,432 1,360,780 1,073,998
Weighted - Average Grant-Date Fair Value per Share      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance $ 14.82 $ 16.08 $ 14.87
Granted 10.40 14.87 14.67
Cancelled 0.00 15.98  
Forfeited 11.82 18.33 12.10
Vested 0.00 0.00 0.00
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance $ 13.04 $ 14.82 $ 16.08
Total Compensation Cost $ 10,500 $ 10,200 $ 10,000