Condensed Consolidated Statements of Shareholders' Equity - USD ($)	Common stock	Treasury stock	Additional paid-in capital	Retained Earnings	Total
Balance at Mar. 31, 2014	$ 483,650		$ 688,881,939	$ 2,833,843	$ 692,199,432
Balance (in shares) at Mar. 31, 2014	48,365,011
Increase (Decrease) in Shareholders' Equity
Issuance - April 24, 2014	$ 14,127		25,849,437		25,863,564
Issuance - April 24, 2014 (in shares)	1,412,698
Issuance - May 13, 2014	$ 71,053		123,413,912		123,484,965
Issuance - May 13, 2014 (in shares)	7,105,263
Issuance - May 22, 2014	$ 2,455		4,335,901		4,338,356
Issuance - May 22, 2014 (in shares)	245,521
Restricted share award issuances	$ 6,550		(6,550)
Restricted share award issuances (in shares)	655,000
Net income for the period				16,432,531	16,432,531
Stock-based compensation			1,524,802		1,524,802
Balance at Dec. 31, 2014	$ 577,835		843,999,441	19,266,374	863,843,650
Balance (in shares) at Dec. 31, 2014	57,783,493
Balance at Mar. 31, 2015	$ 580,575		844,539,059	28,094,625	873,214,259
Balance (in shares) at Mar. 31, 2015	58,057,493
Increase (Decrease) in Shareholders' Equity
Net income for the period				109,527,470	109,527,470
Stock-based compensation			2,684,152		2,684,152
Purchase of treasury stock		$ (10,070,645)			(10,070,645)
Balance at Dec. 31, 2015	$ 580,575	$ (10,070,645)	$ 847,223,211	$ 137,622,095	$ 975,355,236
Balance (in shares) at Dec. 31, 2015	58,057,493