Share-Based Compensation - Stock Options Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Feb. 01, 2020 USD ($) $ / shares shares
Number of Shares
Options outstanding at the beginning of the period (in shares) | shares	3,580,909
Granted (in shares) | shares	1,812,800
Exercised (in shares) | shares	(455,781)
Forfeited (in shares) | shares	(1,145,066)
Expired (in shares) | shares	(248,775)
Options outstanding at the end of the period (in shares) | shares	3,544,087
Exercisable at the end of the period (in shares) | shares	1,537,712
Weighted Average Exercise Price
Options outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 20.71
Granted (in dollars per share) | $ / shares	17.02
Exercised (in dollars per share) | $ / shares	14.57
Forfeited (in dollars per share) | $ / shares	18.82
Expired (in dollars per share) | $ / shares	23.19
Options outstanding at the end of the period (in dollars per share) | $ / shares	20.10
Exercisable at the end of the period (in dollars per share) | $ / shares	$ 24.34
Weighted Average Remaining Contractual Term (Years)
Options outstanding at the end of the period (in years/months/days)	7 years 7 days
Exercisable at the end of the period (in years/months/days)	4 years 6 months 10 days
Aggregate Intrinsic Value
Options outstanding at the end of the period (in dollars) | $	$ 13,102
Exercisable at the end of the period (in dollars) | $	$ 4,152