Earnings Per Share (“EPS”) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Net income	$ 54,661,323	$ 8,996,605	$ 109,527,470	$ 16,432,531
Denominator:
Basic weighted average number of common shares outstanding (in shares)	56,554,253	57,128,493	56,904,489	55,874,505
Effect of dilutive restricted stock (in shares)	40,239		47,939
Diluted weighted average number of common shares outstanding (in shares)	56,594,492	57,128,493	56,952,428	55,874,505
EPS:
Earnings per common share – basic (in dollars per share)	$ 0.97	$ 0.16	$ 1.92	$ 0.29
Earnings per common share – diluted (in dollars per share)	$ 0.97	$ 0.16	$ 1.92	$ 0.29
Restricted stock awards
Earnings/(Loss) Per Share ("EPS")
Number of shares excluded from the calculation of diluted EPS	655,000	655,000	655,000	655,000