Earnings/(Loss) Per Share (Details) - USD ($)	3 Months Ended				6 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net income/(loss)	$ 40,711,896	$ 6,075,059	$ (8,177,120)	$ (20,596,558)	$ 46,786,955	$ (28,773,678)
Denominator:
Basic weighted average number of common shares outstanding (in shares)	54,646,451		54,431,820		54,599,978	54,313,255
Effect of dilutive restricted stock and restricted stock units (in shares)	117,183				225,205
Diluted weighted average number of common shares outstanding (in shares)	54,763,634		54,431,820		54,825,183	54,313,255
EPS:
Earnings/(loss) per common share – basic (in dollars per share)	$ 0.75		$ (0.15)		$ 0.86	$ (0.53)
Earnings/(loss) per common share – diluted (in dollars per share)	$ 0.74		$ (0.15)		$ 0.85	$ (0.53)
Restricted stock awards
EPS:
Number of shares excluded from the calculation of diluted EPS	0		725,685		0	725,685