Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Data - Schedule of Selected Quarterly Financial Data (Detail)

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Selected Quarterly Financial Data - Schedule of Selected Quarterly Financial Data (Detail) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 94,025,000 $ 97,189,000 $ 105,287,000 $ 130,503,000 $ 148,748,000 $ 173,418,000 $ 185,941,000 $ 204,076,000 $ 427,004,000 $ 712,183,000 $ 968,684,000
Operating gross margin (19,694,000) (21,965,000) (20,225,000) (13,428,000) (3,460,000) 4,871,000 4,021,000 24,267,000 (75,312,000) 29,699,000 154,182,000
Operating income (30,190,000) (29,576,000) (28,222,000) (23,269,000) (20,718,000) (4,547,000) (7,944,000) 15,871,000 (111,257,000) (17,338,000) 120,220,000
Net income (loss) attributable to controlling interest $ (48,929,000) $ (46,228,000) $ (39,822,000) $ (95,835,000) $ (35,646,000) $ (48,620,000) $ (14,029,000) $ 3,222,000 $ (230,814,000) $ (95,073,000) $ 23,451,000
Basic earnings per share - net income (loss) $ (0.39) $ (0.37) $ (0.32) $ (0.78) $ (0.29) $ (0.40) $ (0.11) $ 0.03 $ (1.86) $ (0.78) $ 0.19
Diluted earnings per share - net income (loss) $ (0.39) $ (0.37) $ (0.32) $ (0.78) $ (0.29) $ (0.40) $ (0.11) $ 0.03 $ (1.86) $ (0.78) $ 0.19