4. Income Taxes	9 Months Ended
Feb. 28, 2019
Income Tax Disclosure [Abstract]
Income Taxes	4. Income Taxes On December 22, 2017, the United States Government passed new tax legislation that, among other provisions, lowered the corporate tax rate from 35% to 21%. In addition to applying the new lower corporate tax rate in 2018 and thereafter to any taxable income we may have, the legislation affects the way we can use and carryforward net operating losses previously accumulated and results in a revaluation of deferred tax assets and liabilities recorded on our consolidated balance sheet. Given that our current deferred tax assets, with the exception of those representing certain refundable tax credits, are offset by a full valuation allowance, these changes will have no net impact on our condensed consolidated balance sheet. However, if we become profitable, we will receive a reduced benefit from such deferred taxes.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

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