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SELECTED QUARTERLY FINANCIAL DATA (Unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]                      
Total revenue $ 118,096 $ 116,624 $ 28,924 $ 109,148 $ 130,419 $ 129,309 $ 143,218 $ 120,631 $ 372,792 $ 523,577 $ 437,537
Total operating costs and expenses 135,733 93,241 49,887 112,317 101,397 107,858 109,372 90,324 391,178 408,951 316,888
(Loss) income from operations (17,637) 23,383 (20,963) (3,169) 29,022 21,451 33,846 30,307 (18,386) 114,626 120,649
Total other expense, net 13,034 16,908 15,110 11,373 11,237 10,650 10,521 7,038 56,425 39,446 22,852
(Loss) income before provision for income taxes (30,671) 6,475 (36,073) (14,542) 17,785 10,801 23,325 23,269 (74,811) 75,180 97,797
(Benefit) provision for income taxes (50,894) (248) (12,518) (5,664) 4,430 3,802 6,145 5,673 (69,324) 20,050 26,359
Net (loss) income $ 20,223 $ 6,723 $ (23,555) $ (8,878) $ 13,355 $ 6,999 $ 17,180 $ 17,596 $ (5,487) $ 55,130 $ 71,438
Net income per share                      
Basic (in dollars per share) $ 0.62 $ 0.22 $ (0.77) $ (0.28) $ 0.40 $ 0.19 $ 0.42 $ 0.46 $ (0.18) $ 1.46 $ 1.95
Diluted (in dollars per share) $ 0.61 $ 0.22 $ (0.77) $ (0.28) $ 0.40 $ 0.18 $ 0.42 $ 0.46 $ (0.18) $ 1.46 $ 1.87