Commitments	3 Months Ended
Aug. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments	Note 12. Commitments At August 31, 2019, Greystone had commitments totaling $2,484,278 toward the purchase of production equipment.

The entire disclosure for significant arrangements with third parties, which includes operating lease arrangements and arrangements in which the entity has agreed to expend funds to procure goods or services, or has agreed to commit resources to supply goods or services, and operating lease arrangements. Descriptions may include identification of the specific goods and services, period of time covered, minimum quantities and amounts, and cancellation rights.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-URI http://asc.fasb.org/topic&trid=2144648

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