(Loss) Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)	3 Months Ended																12 Months Ended
	Dec. 31, 2020	[1]	Sep. 30, 2020	[1]	Jun. 30, 2020	[1]	Mar. 31, 2020	[1]	Dec. 31, 2019	[1]	Sep. 30, 2019	[1]	Jun. 30, 2019	[1]	Mar. 31, 2019	[1]	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Numerator:
Net (loss) income	$ (154,000,000)		$ (7,000,000)		$ (48,000,000)		$ 8,000,000		$ 72,000,000		$ 50,000,000		$ 39,000,000		$ 55,000,000		$ (200,709,244)	[1],[2]	$ 215,695,961	[1],[2]	$ 298,124,983	[2]
Denominator:
Weighted average shares outstanding, Basic																	85,181,106		88,758,859		97,209,889
Basic EPS	$ (1.81)		$ (0.08)		$ (0.56)		$ 0.09		$ 0.83		$ 0.59		$ 0.43		$ 0.59		$ (2.36)	[1]	$ 2.43	[1]	$ 3.07
Denominator:
Weighted average shares outstanding, diluted																	85,181,106		89,291,176		97,898,242
Diluted EPS	$ (1.81)		$ (0.08)		$ (0.56)		$ 0.09		$ 0.83		$ 0.59		$ 0.43		$ 0.58		$ (2.36)	[1]	$ 2.42	[1]	$ 3.05

[1] The sum of the earnings per share for the four quarters may differ from annual earnings per share due to the required method of computing the weighted average shares in interim periods.

[2] Net (loss) income for years ended December 31, 2020, 2019, and 2018 was ($200,709,244), $215,695,961, and $298,124,983, respectively.