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EARNINGS PER SHARE - Summary of Numerator and Denominators Used in Computation of Earnings Per Share (Detail) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Numerator:          
Net income (loss) attributable to common stockholders $ 12,080 $ 7,537 $ (41,820) $ 5,125  
Number of shares outstanding, end of period:          
Unvested restricted stock (in shares) (82) (109) (82) (109)  
Effect of weighted average shares outstanding (in shares) (10) (2) (178) (210)  
Basic weighted average common shares outstanding (in shares) 41,951 41,377 41,783 41,169  
Impact of potentially dilutive securities:          
Dilutive effect of stock options and other stock awards (in shares) 1,344 910 0 727  
Diluted weighted average shares outstanding (in shares) 43,295 42,287 41,783 41,896  
Antidilutive potentially issuable shares (in shares) 0 322 2,560 322  
Class A Common Stock          
Number of shares outstanding, end of period:          
Common stock, outstanding shares (in shares) 41,055 40,500 41,055 40,500 40,572
Class B Common Stock          
Number of shares outstanding, end of period:          
Common stock, outstanding shares (in shares) 988 988 988 988 988