Income Taxes - Uncertain Income Tax Positions - Narrative (Detail) - USD ($)	Jan. 31, 2021	May 03, 2020	Feb. 02, 2020
Income Taxes [Line Items]
Unrecognized tax benefits	$ 1,400,000
Unrecognized tax benefits that would favorably impact effective income tax rate if recognized	1,100,000	$ 1,300,000	$ 914,000
Non-current Deferred Income Taxes [Member]
Income Taxes [Line Items]
Unrecognized tax benefits	380,000
Income Taxes Payable - Long-Term [Member]
Income Taxes [Line Items]
Unrecognized tax benefits	$ 1,100,000	$ 1,300,000	$ 914,000