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Consolidated Condensed Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Nov. 30, 2021
Nov. 30, 2020
Nov. 30, 2021
Nov. 30, 2020
Statement of Comprehensive Income [Abstract]        
Change in fair value of interest rate lock agreements, tax expense (benefit) $ 3,744 $ 5,400 $ (8,810) $ 9,072
Amortization of interest rate lock agreements, tax benefit 148 115 296 231
Other comprehensive income (loss), tax expense (benefit) $ 3,892 $ 5,515 $ (8,514) $ 9,303