Related Party Transactions	3 Months Ended
Aug. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Note 5. Related Party Transactions Yorktown Management & Financial Services, LLC Yorktown Management & Financial Services, LLC (“Yorktown”), an entity wholly owned by Greystone’s CEO and President, owns and rents to Greystone (1) grinding equipment used to grind raw materials for Greystone’s pallet production and (2) extruders for pelletizing recycled plastic into pellets for resale and for use as raw material in the manufacture of pallets. GSM pays weekly rental fees to Yorktown of $22,500 for use of Yorktown’s grinding equipment and $5,000 for the use of Yorktown’s pelletizing equipment. GSM paid Yorktown total equipment rental fees of $357,500 and $385,000 for the three months ended August 31, 2017 and 2016, respectively. In addition, Yorktown provides office space for Greystone in Tulsa, Oklahoma at a monthly rental of $4,000. TriEnda Holdings, L.L.C. TriEnda Holdings, L.L.C. (“TriEnda”) is a manufacturer of plastic pallets, protective packing and dunnage utilizing thermoform processing for which Warren F. Kruger, Greystone’s president and CEO, serves TriEnda as the non-executive Chairman of the Board of Kruger Brown Holdings, LLC (“KBH”), which owns a majority interest in TriEnda. Mr. Kruger’s net interest through KBH is not a majority ownership interest in TriEnda. Greystone provided tolling services for blending and pelletizing plastic resin. Revenue from TriEnda totaled $187,002 for the three months ended August 31, 2016. Tolling services to TriEnda ended March 1, 2017. Greystone periodically purchases raw material from TriEnda. Purchases for the three months ended August 31, 2017 and 2016 totaled $40,917 and $8,905, respectively. Greystone had accounts payable to TriEnda of $40,917 at August 31, 2017. Green Plastic Pallets Greystone sells plastic pallets to Green Plastic Pallets (“Green”), an entity that is owned by James Kruger, brother to Warren F. Kruger, Greystone’s president and CEO. Greystone had sales to Green of $36,750 and $18,365 for the three months ended August 31, 2017 and 2016, respectively. As of August 31, 2017, Greystone had an account receivable of $36,750 from Green.

Related Party Transactions

3 Months Ended

Aug. 31, 2017

Note 5. Related Party Transactions

Yorktown Management & Financial Services, LLC

Yorktown Management & Financial Services, LLC (“Yorktown”), an entity wholly owned by Greystone’s CEO and President, owns and rents to Greystone (1) grinding equipment used to grind raw materials for Greystone’s pallet production and (2) extruders for pelletizing recycled plastic into pellets for resale and for use as raw material in the manufacture of pallets. GSM pays weekly rental fees to Yorktown of $22,500 for use of Yorktown’s grinding equipment and $5,000 for the use of Yorktown’s pelletizing equipment. GSM paid Yorktown total equipment rental fees of $357,500 and $385,000 for the three months ended August 31, 2017 and 2016, respectively.

In addition, Yorktown provides office space for Greystone in Tulsa, Oklahoma at a monthly rental of $4,000.

TriEnda Holdings, L.L.C.

TriEnda Holdings, L.L.C. (“TriEnda”) is a manufacturer of plastic pallets, protective packing and dunnage utilizing thermoform processing for which Warren F. Kruger, Greystone’s president and CEO, serves TriEnda as the non-executive Chairman of the Board of Kruger Brown Holdings, LLC (“KBH”), which owns a majority interest in TriEnda. Mr. Kruger’s net interest through KBH is not a majority ownership interest in TriEnda. Greystone provided tolling services for blending and pelletizing plastic resin. Revenue from TriEnda totaled $187,002 for the three months ended August 31, 2016. Tolling services to TriEnda ended March 1, 2017.

Greystone periodically purchases raw material from TriEnda. Purchases for the three months ended August 31, 2017 and 2016 totaled $40,917 and $8,905, respectively. Greystone had accounts payable to TriEnda of $40,917 at August 31, 2017.

Green Plastic Pallets

Greystone sells plastic pallets to Green Plastic Pallets (“Green”), an entity that is owned by James Kruger, brother to Warren F. Kruger, Greystone’s president and CEO. Greystone had sales to Green of $36,750 and $18,365 for the three months ended August 31, 2017 and 2016, respectively. As of August 31, 2017, Greystone had an account receivable of $36,750 from Green.