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Significant Components of Deferred Income Tax Liabilities and Assets (Detail) - USD ($) $ in Thousands | May 31, 2017 | May 31, 2016
--- | --- | ---
Deferred income tax liabilities |  |
Indefinite and long-lived assets | $ (23,177) | $ (19,296)
Prepaid expenses | (640) | (824)
Brazil valuation allowance |  | (542)
Deferred Tax Liabilities, Gross | (23,817) | (20,662)
Deferred income tax assets |  |
Stock Options | 2,604 | 2,786
Inventories and accounts receivable | 2,603 | 2,076
Tax loss carryforwards | 436 | 813
Accrued expenses and other | 1,126 | 229
Deferred Tax Assets, Net of Valuation Allowance, Total | 6,769 | 5,904
Net deferred income tax liabilities | $ (17,048) | $ (14,758)

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