Earnings (Loss) Per Share - Schedule of Reconciliation of Net Loss Attributable to Common Stockholders and Shares used in Calculating Basic and Diluted Earnings (Loss) Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share [Abstract]
Net income (loss) attributable to the Company	$ 30,225,757	$ (6,456,722)	$ (7,965,511)	$ 73,280,028	$ 86,101,893	$ (2,326,578)	$ (5,656,573)	$ (5,644,875)	$ 89,083,552	$ 72,473,867	$ (25,579,651)
Less: dividends declared on participating securities									7,548	9,323	183,805
Net income (loss) attributable to common stockholders									$ 89,076,004	$ 72,464,544	$ (25,763,456)
Weighted average number of common shares outstanding — basic (in shares)									75,049,667	75,794,705	76,195,083
Weighted average number of common shares outstanding — diluted (in shares)									75,062,053	75,807,710	76,195,083
Loss per common share - basic and diluted (in dollars per share)	$ 0.42	$ (0.09)	$ (0.11)	$ 0.97	$ 1.14	$ (0.03)	$ (0.07)	$ (0.07)	$ 1.19	$ 0.96	$ (0.34)