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Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
May 31, 2021
May 31, 2020
May 31, 2019
Current:      
Federal $ 6,981 $ 6,886 $ 7,173
Change in tax-related uncertainties (75) 269 13
State 2,147 1,262 1,265
Foreign 4,875 2,475 3,758
Deferred:      
Federal 479 1,964 1,031
State 44 195 98
Foreign (65) (221) (555)
Provision for Income Taxes $ 14,386 $ 12,830 $ 12,783