Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net income	[1]	$ 30,170,029	$ 50,212,615
Denominator:
Weighted average shares outstanding, Basic		98,620,957	98,798,007
Basic EPS		$ 0.31	$ 0.51
Denominator:
Weighted average shares outstanding, diluted		99,487,013	99,339,928
Diluted EPS		$ 0.30	$ 0.51

[1] Net income for the three months ended March 31, 2018 and 2017 was $30,170,029 and $50,212,615, respectively.