XML 110 R96.htm IDEA: XBRL DOCUMENT v3.21.1
Income taxes - Narrative (Details) - USD ($)
 3 Months Ended 12 Months Ended
May 31, 2020
Feb. 28, 2021
Feb. 29, 2020
Feb. 28, 2019
Feb. 28, 2018
Income Tax Contingency [Line Items]          
Income tax expense   $ 15,484,000 $ 13,607,000 $ 13,776,000  
Foreign earnings repatriated   48,300,000      
Undistributed earnings of foreign subsidiaries   23,000,000.0      
U S tax liability for income generated in Macau   0      
Net increase in valuation allowance   900,000      
Unrecognized tax benefits that would affect effective tax rate if recognized     5,400,000    
Liability for tax-related interest and penalties included in unrecognized tax benefits   2,900,000 100,000    
Tax-related interest and penalties expense included in provisions for income tax   $ 2,900,000 $ 500,000 500,000  
Tax Year 2018          
Income Tax Contingency [Line Items]          
One-time income tax benefit         $ 17,900,000
Income tax expense       $ 9,400,000  
Minimum          
Income Tax Contingency [Line Items]          
Change in effective tax rate   1.50%      
Maximum          
Income Tax Contingency [Line Items]          
Change in effective tax rate   2.00%      
COVID-19          
Income Tax Contingency [Line Items]          
One-time income tax benefit, CARES Act $ 9,400,000        
State          
Income Tax Contingency [Line Items]          
Tax assessment   $ 6,000,000.0      
Settlement of tax assessment   $ 500,000