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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 10 Months Ended
Dec. 01, 2018
Dec. 02, 2017
Dec. 01, 2018
Dec. 02, 2017
Dec. 31, 2017
Mar. 03, 2018
Income Taxes            
Federal statutory rate (as a percent)     21.00%   35.00%  
Income tax expense (benefit) $ (1,471) $ (16,061) $ (117,527) $ 89,268    
Estimated effective tax rate (as a percent) 7.90% 46.90% 22.20% 40.00%    
Increase in valuation allowance to offset the current year deferred state tax benefits (as a percent) (9.50%)   (4.10%)      
Valuation allowance adjustments relating to stock based compensation (8.10%)   (0.90%)      
Decrease in unrecognized tax benefits related to state exposures     $ 13,498      
Valuation allowance against net deferred tax assets $ 921,572   $ 921,572     $ 896,800