Earnings Per Share (EPS) (Details) - USD ($)	3 Months Ended						9 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020
Numerator:
Net income	$ 16,580,885	$ 14,101,803	$ 5,869,100	$ 35,825,264	$ 537,950	$ 12,168,005	$ 36,551,788	$ 48,531,219
Denominator:
Basic weighted average number of common shares outstanding (in shares)	39,890,674			50,255,908			40,305,902	50,511,473
Effect of dilutive restricted stock and restricted stock units (in shares)	134,725			112,484			154,763	94,512
Diluted weighted average number of common shares outstanding (in shares)	40,025,399			50,368,392			40,460,665	50,605,985
EPS:
Earnings per common share - basic (in dollars per share)	$ 0.42			$ 0.71			$ 0.91	$ 0.96
Earnings per common share - diluted (in dollars per share)	$ 0.41			$ 0.71			$ 0.90	$ 0.96
Restricted stock awards
EPS:
Number of shares excluded from the calculation of diluted EPS	0			0			0	0