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v3.20.2

Reconciliation of Income Taxes Computed at the U.S. Federal Statutory Tax Rate to Income Tax Expense (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018
Components Of Deferred Income Tax Assets And Liabilities [Line Items] |  |  |
Tax at U.S. statutory rate | $ 15,184 | $ 15,321 | $ 21,459
Permanent differences | 360 | (56) |
Section 199 domestic production deduction |  |  | (1,167)
Global intangible low-taxed income (GILTI) | 438 | 840 |
Foreign derived intangible income deduction (FDII) | (1,120) | (1,531) |
Foreign rate differential | (182) | 495 | (461)
Subpart F income | 634 | 842 | 816
Tax benefits on stock-based compensation | (1,998) | (2,586) | (4,816)
Changes in tax contingencies - Increase/(Release) | 269 | 13 | (1,035)
Provision for state income taxes, net of federal benefit | 1,412 | 1,251 | 975
Remeasurement of deferred taxes |  |  | (6,022)
Transition tax on foreign earnings and profits |  |  | 1,223
Tax credits | (1,417) | (1,726) | (1,151)
Other | (750) | (80) | 429
Provision for Income Taxes | $ 12,830 | $ 12,783 | $ 10,250

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