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Critical Accounting Policies and Estimates - Schedule of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Aug. 31, 2019
Jun. 01, 2019
Accrued Liabilities:    
Compensation and payroll taxes $ 3,469 $ 2,846
Accrued severance 487 520
Professional fees 523 471
Deferred revenue 1,750 2,260
Other accrued expenses 4,109 5,176
Accrued Liabilities $ 10,338 $ 11,273