XML 57 R43.htm IDEA: XBRL DOCUMENT v3.5.0.2
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, 2016
May 31, 2015
May 31, 2014
Components Of Deferred Income Tax Assets And Liabilities [Line Items]      
Tax at U.S. statutory rates $ 19,429 $ 18,227 $ 15,061
Section 199 domestic production deduction (1,143) (1,067) (821)
Foreign rate differential (699) (949) (726)
Subpart F income 1,049 1,396 1,143
Tax credits and other 337 39 (170)
Provisions for state income taxes, net of federal benefit 779 854 513
Amended U.S. Federal tax returns, FY12, FY13 & FY14 (777) 0 0
Provision for Income Taxes $ 18,975 $ 18,500 $ 15,000