Income Taxes	9 Months Ended
Feb. 28, 2017
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 7 Income Taxes At February 28, 2017, the Corporation’s gross deferred tax assets of approximately $49.8 million consist of approximately $34.8 million in federal net operating loss and tax credit carryforwards, $7.8 million in state net operating loss carryforwards and $7.2 million resulting from temporary differences between financial and tax reporting. The federal net operating loss and tax credit carryforwards have a life expectancy of between eleven and twenty years. The state net operating loss carryforwards have a life expectancy, depending on the state where a loss was incurred, between one and twenty years. The Corporation has recorded a full valuation allowance against this asset. If the Corporation, after considering future negative and positive evidence regarding the realization of deferred tax assets, determines that a lesser valuation allowance is warranted, it would record a reduction to income tax expense and the valuation allowance in the period of determination.

Income Taxes

9 Months Ended

Feb. 28, 2017

NOTE 7 Income Taxes

At February 28, 2017, the Corporation’s gross deferred tax assets of approximately $49.8 million consist of approximately $34.8 million in federal net operating loss and tax credit carryforwards, $7.8 million in state net operating loss carryforwards and $7.2 million resulting from temporary differences between financial and tax reporting. The federal net operating loss and tax credit carryforwards have a life expectancy of between eleven and twenty years. The state net operating loss carryforwards have a life expectancy, depending on the state where a loss was incurred, between one and twenty years. The Corporation has recorded a full valuation allowance against this asset. If the Corporation, after considering future negative and positive evidence regarding the realization of deferred tax assets, determines that a lesser valuation allowance is warranted, it would record a reduction to income tax expense and the valuation allowance in the period of determination.