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Note 7 - Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Nov. 02, 2019
Nov. 03, 2018
Nov. 02, 2019
Nov. 03, 2018
Effective Income Tax Rate Reconciliation, Percent, Total 23.70% 39.30% 2.10% 36.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     21.00% 21.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount     $ 0.2