Share-Based Compensation - Stock Options Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Jan. 30, 2021 USD ($) $ / shares shares
Number of Shares
Options outstanding at the beginning of the period (in shares) | shares	3,544,087
Granted (in shares) | shares	822,057
Exercised (in shares) | shares	(448,439)
Forfeited (in shares) | shares	(273,625)
Expired (in shares) | shares	(138,850)
Options outstanding at the end of the period (in shares) | shares	3,505,230
Exercisable at the end of the period (in shares) | shares	1,517,323
Weighted Average Exercise Price
Options outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 20.10
Granted (in dollars per share) | $ / shares	8.79
Exercised (in dollars per share) | $ / shares	13.74
Forfeited (in dollars per share) | $ / shares	16.20
Expired (in dollars per share) | $ / shares	43.50
Options outstanding at the end of the period (in dollars per share) | $ / shares	17.64
Exercisable at the end of the period (in dollars per share) | $ / shares	$ 22.31
Weighted Average Remaining Contractual Term (Years)
Options outstanding at the end of the period (in years/months/days)	6 years 11 months 15 days
Exercisable at the end of the period (in years/months/days)	4 years 8 months 1 day
Aggregate Intrinsic Value
Options outstanding at the end of the period (in dollars) | $	$ 23,927
Exercisable at the end of the period (in dollars) | $	$ 5,758