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Critical Accounting Policies and Estimates (Tables)
 9 Months Ended
Feb. 29, 2020
Accounting Policies [Abstract]  
Schedule of Accrued Liabilities Accrued liabilities consisted of the following (in thousands):

 

 

 

February 29, 2020

 

 

June 1, 2019

 

Compensation and payroll taxes

 

$

3,406

 

 

$

2,846

 

Accrued severance

 

 

439

 

 

 

520

 

Professional fees

 

 

604

 

 

 

471

 

Deferred revenue

 

 

1,916

 

 

 

2,260

 

Other accrued expenses

 

 

4,637

 

 

 

5,176

 

Accrued Liabilities

 

$

11,002

 

 

$

11,273