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Debt - Components of the Convertible Notes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 30, 2021	Oct. 24, 2020	Oct. 30, 2021	Oct. 24, 2020	Jan. 30, 2021	Jan. 25, 2020	Sep. 15, 2015
Debt Instrument [Line Items]
Equity component of 0.75% senior convertible notes due 2021, net	$ 112,600,000		$ 112,600,000
Amortization of debt discount			1,665,000	$ 6,732,000
Estimate of Fair Value Measurement
Debt Instrument [Line Items]
Debt instrument, face amount					$ 60,886,000
Less: Debt discount and debt issuance costs					(1,854,000)
Convertible Debt					59,032,000
0.75% Convertible Senior Notes Due 2021
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount					(1,665,000)
Debt issuance cost					(189,000)
Amortization of debt discount	300,000	$ 600,000	1,700,000	$ 6,700,000
Debt instrument, face amount	$ 58,300,000		$ 58,300,000		58,264,000	$ 460,000,000	$ 485,000,000
Convertible Debt					$ 56,410,000