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Significant Components of Deferred Income Tax Liabilities and Assets (Detail) - USD ($)
$ in Thousands
May 31, 2021
May 31, 2020
Deferred income tax liabilities    
Indefinite and long-lived assets $ (25,072) $ (20,867)
Prepaid expenses (721) (795)
Deferred Tax Liabilities, Gross (25,793) (21,662)
Deferred income tax assets    
Stock options 1,106 1,479
Inventories and accounts receivable 2,081 1,336
Tax loss carryforwards 662 484
Accrued expenses and other 568 657
Less: valuation allowances (541) (419)
Deferred Tax Assets, Net of Valuation Allowance, Total 3,876 3,537
Net deferred income tax liabilities $ (21,917) $ (18,125)