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Long-term Debt - Schedule of Net Carrying Amount of Long-term Debt Instruments (Details) - USD ($)
$ in Thousands
May 31, 2022
May 31, 2021
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 187,152 $ 206,169
Unamortized financing fees (1,450) (2,061)
Net carrying amount 185,702 204,108
Less principal portion included in current liabilities (67,823) (36,622)
Total noncurrent portion of long-term debt 117,879 167,486
Credit Facility Due in November 2022    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 53,720 62,964
Term Loan Due in July 2023    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 12,750 14,335
Term Loan Due in April 2022    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 15,050 17,117
Term Loan Due in August 2026    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 462 587
Mortgage Payable due in August 2026    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 2,327 2,562
Vendor-Take-Back Mortgage Due in June 2021    
Debt Instrument [Line Items]    
Carrying amount of long-term debt   92
Term Loan Due in December 2023 | Euro Interbank Offered Rate Plus 1.79%    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 1,878 3,356
Term Loan Due in December 2023 | Euro Interbank Offered Rate Plus 2.68%    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 1,878 3,356
Term Loan Due in April 2025 | Euro Interbank Offered Rate Plus 2.00%    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 1,219 1,831
Term Loan Due in June 2025 | Euro Interbank Offered Rate Plus 2.00%    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 1,307 1,831
Mortgage Payable Due in October 2030 | EUROBIR Rate Plus 1.5%    
Debt Instrument [Line Items]    
Carrying amount of long-term debt 21,561  
Term Loan Principal Due in December 2023 | EUROBIR Rate Plus Applicable Margin    
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 75,000 $ 98,138