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
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