RETIREMENT PLAN	12 Months Ended
May 31, 2013
RETIREMENT PLAN [Abstract]
RETIREMENT PLAN	Note 14. RETIREMENT PLAN Greystone sponsors a retirement plan for the benefit of all eligible employees. The retirement plan qualifies under Section 401(k) of the Internal Revenue Code thereby allowing eligible employees to make tax-deferred contributions. The retirement plan provides that Greystone may elect to make employer-matching contributions equal to a percentage of each participant's voluntary contribution and may also elect to make profit sharing contributions. Greystone has never made any matching or profit sharing contributions to the retirement plan.

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

No definition available.

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