Federal Income Taxes - Summary of Deferred Tax Assets Classified (Details) - USD ($)	May. 31, 2015	May. 31, 2014
Income Tax Disclosure [Abstract]
Deferred tax assets - current	$ 1,222,110	$ 1,077,000
Deferred tax assets - non-current	557,127	1,133,000
Deferred tax assets - total	$ 1,779,237	$ 2,210,000