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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
Income Tax Disclosure [Abstract]        
Unrecognized tax benefits, gross $ 28,997 $ 30,865 $ 30,270 $ 28,685
Unrecognized tax benefits that would impact effective tax rate, if recognized 7,600 9,200 10,700  
Accrued interest $ 4,700 $ 4,000 $ 3,200