Supplemental Information of Cash Flows - Summary of Supplemental Information of Cash Flows (Details) - USD ($)	12 Months Ended
	May 31, 2016	May 31, 2015
Supplemental Cash Flow Information [Abstract]
Acquisition of equipment through capital lease		$ 64,497
Acquisition of equipment from related party in exchange for receivable and/or note payable	1,137,865	75,000
Acquisition of equipment in accounts payable	113,047
Preferred dividend accrual	5,690	26,712
Interest paid	$ 542,442	$ 511,496