Earnings/(Loss) Per Share (EPS) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Numerator:
Net income/(loss)	$ 5,039,624	$ 54,661,323	$ (3,397,085)	$ 109,527,470
Denominator:
Basic weighted average number of common shares outstanding (in shares)	53,845,777	56,554,253	54,153,218	56,904,489
Effect of dilutive restricted stock (in shares)	33,568	40,239		47,939
Diluted weighted average number of common shares outstanding (in shares)	53,879,345	56,594,492	54,153,218	56,952,428
EPS:
Earnings/(loss) per common share – basic (in dollars per share)	$ 0.09	$ 0.97	$ (0.06)	$ 1.92
Earnings/(loss) per common share – diluted (in dollars per share)	$ 0.09	$ 0.97	$ (0.06)	$ 1.92
Restricted stock awards
EPS:
Number of shares excluded from the calculation of diluted EPS	865,500	655,000	1,114,625	655,000