NET INCOME (LOSS) PER COMMON SHARE - Calculation of Basic and Diluted (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Income (loss) available to the Company from continuing operations	$ (487,537,000)	$ 38,208,000	$ 25,992,000	$ 3,125,000	$ (386,568,000)	$ 36,590,000	$ 1,597,000	$ (14,206,000)	$ (420,212,000)	$ (362,587,000)	$ 233,013,000
Preferred Stock Dividends, Income Statement Impact	0	0	0	0	0	0	0	0	0	0	2,015,000
Net income available to common shareholders from continuing operations	(487,537,000)	38,208,000	25,992,000	3,125,000	(386,568,000)	36,590,000	1,597,000	(14,206,000)	(420,212,000)	(362,587,000)	230,998,000
Income from discontinued operations, net of income taxes (benefit)	0	0	0	0	(378,000)	358,000	844,000	328,000	0	1,152,000	836,000
Net income (loss) available to common shareholders	$ (487,537,000)	$ 38,208,000	$ 25,992,000	$ 3,125,000	$ (386,946,000)	$ 36,948,000	$ 2,441,000	$ (13,878,000)	(420,212,000)	(361,435,000)	231,834,000
Net income (loss) available to common shareholders									$ (420,212,000)	$ (361,435,000)	$ 231,834,000
Weighted average shares outstanding, basic (in shares)	133,985,000	136,449,000	138,760,000	138,099,000	138,033,000	138,740,000	138,639,000	138,939,000	136,967,455	138,069,608	51,392,899
Net income (loss) from continuing operations per share available to common shareholders - Basic (in dollars per share)	$ (3.64)	$ 0.28	$ 0.19	$ 0.02	$ (2.80)	$ 0.26	$ 0.01	$ (0.10)	$ (3.07)	$ (2.63)	$ 4.49
Net income (loss) from discontinued operations per share available to common shareholders - Basic (in dollars per share)	0	0	0	0	0	0	0	0	0	0.01	0.02
Net income (loss) per share available to common shareholders - Basic (in dollars per share)	$ (3.64)	$ 0.28	$ 0.19	$ 0.02	$ (2.80)	$ 0.27	$ 0.02	$ (0.10)	$ (3.07)	$ (2.62)	$ 4.51
Weighted average shares outstanding, basic (in shares)	133,985,000	136,449,000	138,760,000	138,099,000	138,033,000	138,740,000	138,639,000	138,939,000	136,967,455	138,069,608	51,392,899
Effect of RSUs and options under the treasury stock method (in shares)									0	0	1,492,257
Weighted average shares outstanding, diluted (in shares)	133,985,000	136,453,000	139,074,000	138,523,000	138,033,000	139,103,000	139,263,000	138,939,000	136,967,455	138,069,608	52,885,156
Net income (loss) from continuing operations per share available to common shareholders - Diluted (in dollars per share)	$ (3.64)	$ 0.28	$ 0.19	$ 0.02	$ (2.80)	$ 0.26	$ 0.01	$ (0.10)	$ (3.07)	$ (2.63)	$ 4.37
Net income (loss) from discontinued operations per share available to common shareholders - Diluted (in dollars per share)	0	0	0	0	0	0	0	0	0	0.01	0.02
Net income (loss) per share available to common shareholders - Diluted (in dollars per share)	$ (3.64)	$ 0.28	$ 0.19	$ 0.02	$ (2.80)	$ 0.27	$ 0.02	$ (0.10)	$ (3.07)	$ (2.62)	$ 4.38