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Contingent Liabilities and Commitments (Tables)
 12 Months Ended
May 31, 2021
Commitments And Contingencies Disclosure [Abstract]  
Summary of Progression of Liabilities A progression of the liabilities recorded in connection with this matter during fiscal 2021 is summarized in the following table:

(in thousands)

Beginning

Balance

 

 

Expense

 

 

Payments

 

 

Adjustments

 

 

Ending

Balance

 

Tank replacement costs

$

4,964

 

 

$

-

 

 

$

(86

)

 

$

-

 

 

$

4,878