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STOCK-BASED COMPENSATION (Schedule of activity in restricted stock and RSUs) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Number of Shares/Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance 2,675,275    
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 $ 14.83    
Total Compensation Cost $ 39,700    
Performance Restricted Stock Units And Profit Interest Units [Member]      
Number of Shares/Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance 2,169,432 1,360,780 1,073,998
Granted 822,584 1,012,032 685,064
Cancelled (125,885) 0 (5,361)
Forfeited 0 (203,380) (392,921)
Vested (465,044) 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance 2,401,087 2,169,432 1,360,780
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 $ 13.04 $ 14.82 $ 16.08
Granted 14.80 10.40 14.87
Cancelled 14.57 0 15.98
Forfeited 0 11.82 18.33
Vested 15.89 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance $ 13.01 $ 13.04 $ 14.82
Total Compensation Cost $ 12,220 $ 10,500 $ 10,200
Restricted Stock And Restricted Stock Units RSU And Profit Interest Units [Member]      
Number of Shares/Units      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Beginning Balance 358,873 337,509 336,053
Granted 160,158 217,717 185,004
Forfeited (32,376) (5,941) (1,000)
Vested (188,063) (190,412) (182,548)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance 298,592 358,873 337,509
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 $ 29.44 $ 32.78 $ 37.32
Granted 35.20 28.19 31.25
Forfeited 30.38 30.82 34.78
Vested 31.01 33.89 39.58
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance $ 31.44 $ 29.44 $ 32.78
Total Compensation Cost $ 5,600 $ 6,100 $ 5,800