Segment Information - Schedule of Segment Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Apr. 30, 2015	Apr. 30, 2014
Cost of revenue	$ 10,486,373		$ 10,486,373
Gross Margin	7,860,738	$ 757,485	7,923,579	$ 1,423,761
Operating income (loss)	6,293,946	(1,103,025)	5,524,773	(2,816,601)
Cash and cash equivalents	526,135	2,749,928	526,135	2,749,928	$ 1,010,543	$ 8,352,949
Investment in real estate	6,021,779		6,021,779
Oil and gas assets, net	15,403,606		15,403,606		$ 15,757,011
Property, plant and equipment	$ 2,143,167		2,143,167		2,203,393
Oil and Gas [Member]
Revenue		$ 757,485	$ 62,841	$ 1,423,761
Cost of revenue
Gross Margin		$ 757,485	$ 62,841	$ 1,423,761
Expenses	$ (1,572,311)	(1,860,510)	(2,404,325)	(4,240,362)
Operating income (loss)	(1,572,311)	$ (1,103,025)	(2,341,484)	$ (2,816,601)
Cash and cash equivalents	$ 526,135		$ 526,135		$ 1,010,543
Investment in real estate
Oil and gas assets, net					$ 15,757,011
Property, plant and equipment					$ 2,203,393
Real Estate [Member]
Revenue	$ 18,347,111		$ 18,347,111
Cost of revenue	(9,522,603)		(10,486,373)
Gross Margin	8,824,508		$ 7,860,738
Expenses	(963,770)
Operating income (loss)	$ 7,860,738		$ 7,860,738
Cash and cash equivalents
Investment in real estate	$ 6,021,779		$ 6,021,779
Oil and gas assets, net
Property, plant and equipment
Total [Member]
Revenue	18,347,111	$ 757,485	18,409,952	$ 1,423,761
Cost of revenue	(9,522,603)		(10,486,373)
Gross Margin	8,824,508	$ 757,485	7,860,738	$ 1,423,761
Expenses	(2,536,081)	(1,860,510)	(2,404,325)	(4,240,362)
Operating income (loss)	$ 6,288,427	$ (1,103,025)	$ 5,519,254	$ (2,816,601)