Lease Obligations, Other Commitments, and Contingencies - Schedule of Gross Amount Assets and Liabilities Related to Operating and Finance Leases (Details) - USD ($) $ in Thousands	Aug. 31, 2019	Jun. 01, 2019
Lease Type
Operating lease ROU asset	$ 3,643
Finance lease ROU asset	464
Total Lease ROU asset	4,107
Operating lease liability current	1,390
Finance lease liability current	151
Total lease liability current	1,541
Operating lease liability non-current	2,386
Finance lease liability non-current	292
Total lease liability non-current	$ 2,678