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Lease Obligations, Other Commitments, and Contingencies - Schedule of Gross Amount Assets and Liabilities Related to Operating and Financing Leases (Details) - USD ($) $ in Thousands | Feb. 29, 2020 | Jun. 01, 2019
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Lease Type |  |
Operating lease ROU asset | $ 3,303 |
Financing lease ROU asset | 424 |
Total Lease ROU asset | 3,727 |
Operating lease liability current | 1,412 |
Financing lease liability current | 154 |
Total lease liability current | 1,566 |
Operating lease liability non-current | 1,998 |
Financing lease liability non-current | 206 |
Total lease liability non-current | $ 2,204 |

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