Earnings Per Share ("EPS") (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Net income	$ 41,213,264	$ 3,768,677	$ 54,866,147	$ 7,435,926
Denominator:
Basic weighted average number of common shares outstanding (in shares)	57,033,156	57,128,493	57,080,564	55,244,082
Effect of dilutive restricted stock (in shares)	49,040		55,932
Diluted weighted average number of common shares outstanding (in shares)	57,082,196	57,128,493	57,136,496	55,244,082
EPS:
Earnings per common share - basic (in dollars per share)	$ 0.72	$ 0.07	$ 0.96	$ 0.13
Earnings per common share - diluted (in dollars per share)	$ 0.72	$ 0.07	$ 0.96	$ 0.13
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