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Commitments and Contingencies (Details 1) $ in Thousands	May 31, 2018 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Purchase obligation	$ 56,201
Purchase obligation, 2019	11,751
Purchase obligation, 2020	14,243
Purchase obligation, 2021	15,485
Purchase obligation, 2022	9,189
Purchase obligation, 2023 and thereafter	5,533
Royalties	45,000
Royalties, 2019	3,000
Royalties, 2020	3,500
Royalties, 2021	3,500
Royalties, 2022	3,500
Royalties, 2023 and thereafter	31,500
Other	667
Other, 2019	167
Other, 2020	167
Other, 2021	167
Other, 2022	166
Other, 2023 and thereafter	0
Total	101,868
Total, 2019	14,918
Total, 2020	17,910
Total, 2021	19,152
Total, 2022	12,855
Total, 2023 and thereafter	$ 37,033

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Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

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Minimum amount of purchase arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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