Share-Based Compensation (Restricted Stock Units Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		May 02, 2020	May 04, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Exercise of Option, Tax Benefit		$ 0	$ 1,239
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		796,725
Number of Underlying Shares, Granted		0
Number of Underlying Shares, Forfeited		(162,475)
Number of Underlying Shares, Ending Balance at May 2, 2020		634,250
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 40.06
Weighted-Average Grant Date Fair Value, Granted		0
Weighted-Average Grant Date Fair Value, Forfeited		44.86
Weighted-Average Grant Date Fair Value, Ending Balance at May 2, 2020		$ 38.84
Service-based restricted stock units with $1.00 net income requirement [Member]
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Ending Balance at May 2, 2020		79,028
Service-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 28,275
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		1,676,831
Number of Underlying Shares, Granted		1,646,771
Number of Underlying Shares, Adjustments for performance achievement		0
Number of Underlying Shares, Vested		(639,921)
Number of Underlying Shares, Forfeited		(12,881)
Number of Underlying Shares, Ending Balance at May 2, 2020	[1]	2,670,800
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 18.68
Weighted-Average Grant Date Fair Value, Granted		7.29
Weighted-Average Grant Date Fair Value, Adjustments for performance achievement		0
Weighted-Average Grant Date Fair Value, Vested		18.00
Weighted-Average Grant Date Fair Value, Forfeited		19.99
Weighted-Average Grant Date Fair Value, Ending Balance at May 2, 2020		$ 11.81
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		1 year 4 months 24 days
Performance-based restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 161
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		747,056
Number of Underlying Shares, Granted		0
Number of Underlying Shares, Adjustments for performance achievement		38,381
Number of Underlying Shares, Vested		(478,728)
Number of Underlying Shares, Forfeited		(817)
Number of Underlying Shares, Ending Balance at May 2, 2020		305,892
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 15.11
Weighted-Average Grant Date Fair Value, Granted		0
Weighted-Average Grant Date Fair Value, Adjustments for performance achievement		11.37
Weighted-Average Grant Date Fair Value, Vested		9.58
Weighted-Average Grant Date Fair Value, Forfeited		17.56
Weighted-Average Grant Date Fair Value, Ending Balance at May 2, 2020		$ 22.39
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		1 month 6 days
Market-based restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount		$ 3,308
Restricted Stock Unit Activity, Number of Underlying Shares
Number of Underlying Shares, Beginning Balance at February 1, 2020		421,784
Number of Underlying Shares, Granted		0
Number of Underlying Shares, Adjustments for performance achievement		134,122
Number of Underlying Shares, Vested		(350,447)
Number of Underlying Shares, Forfeited		0
Number of Underlying Shares, Ending Balance at May 2, 2020		205,459
Restricted Stock Unit Activity, Weighted-Average Grant Date Fair Value
Weighted-Average Grant Date Fair Value, Beginning Balance at February 1, 2020		$ 23.05
Weighted-Average Grant Date Fair Value, Granted		0	$ 36.24
Weighted-Average Grant Date Fair Value, Adjustments for performance achievement		11.79
Weighted-Average Grant Date Fair Value, Vested		11.79
Weighted-Average Grant Date Fair Value, Forfeited		0
Weighted-Average Grant Date Fair Value, Ending Balance at May 2, 2020		$ 34.90
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition		10 months 24 days

[1] ⁽¹⁾  Includes 79,028 unvested restricted stock units as of May 2, 2020, subject to vesting requirements related to the achievement of certain performance metrics, such as operating income and net income, for the fiscal year immediately preceding the vesting date. Holders of these restricted stock units have the opportunity to earn back one or more installments of the award if the cumulative performance requirements are met in a subsequent year. ⁽²⁾  Unvested shares related to restricted stock units with performance-based and market-based vesting conditions are reflected at 100% of their target vesting amount in the table above. Certain unvested shares related to restricted stock units with performance-based vesting conditions can be achieved at up to 200% of their target vesting amount.