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Schedule II - Valuation And Qualifying Accounts (Details) - Allowance for doubtful accounts and other sales allowances - USD ($)
12 Months Ended
Jan. 28, 2018
Jan. 29, 2017
Jan. 31, 2016
Change in Valuation Allowances and Reserves [Roll Forward]      
Balance at Beginning of Year $ 8,229,975 $ 7,792,799 $ 3,523,148
Charged to Costs and Expenses 11,365,813 951,612 5,154,545
Deductions (10,506,484) (514,436) (884,894)
Balance at End of Year $ 9,089,304 $ 8,229,975 $ 7,792,799