Basis of Presentation - Accounting Standards (Details) - USD ($) $ in Thousands	Feb. 02, 2020	Aug. 01, 2020	Feb. 01, 2020	Aug. 03, 2019
Accounting Standards Adopted
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected	us-gaap:AccountingStandardsUpdate201912CumulativeEffectPeriodOfAdoptionForFranchiseTaxBasedOnIncomeMember
Retained earnings		$ 267,273	$ 366,793	$ 362,407
ASC Topic 326, Financial Instruments-Credit Losses
Accounting Standards Adopted
Change in Accounting Principle, Accounting Standards Update, Adopted	true
ASC Topic 326, Financial Instruments-Credit Losses | Cumulative Effect, Period of Adoption, Adjustment
Accounting Standards Adopted
Retained earnings			$ (500)
ASC Topic 740, Simplifying the Accounting for Income Taxes
Accounting Standards Adopted
Change in Accounting Principle, Accounting Standards Update, Adopted	true