Share-Based Compensation - Summary of the Activity for Unvested Stock Option Awards (Details) - $ / shares shares in Thousands	12 Months Ended
	Jan. 26, 2020	Jan. 27, 2019	Jan. 28, 2018
Number of Shares
Options granted (in shares)	0
Weighted Average Exercise Price (per share)
Beginning balance (in dollars per share)	$ 29.03
Options granted (in dollars per share)	0
Options forfeited (in dollars per share)	41.71
Ending balance (in dollars per share)	$ 30.26	$ 29.03
Weighted Average Grant Date Fair Value (per share)
Options granted (in dollars per share)		$ 14.53	$ 10.70
Unvested Stock Options Award
Number of Shares
Beginning balance (in shares)	400
Options granted (in shares)	0
Options vested (in shares)	(193)
Options forfeited (in shares)	(11)
Ending balance (in shares)	196	400
Weighted Average Exercise Price (per share)
Beginning balance (in dollars per share)	$ 34.52
Options granted (in dollars per share)	0
Options vested (in dollars per share)	27.40
Options forfeited (in dollars per share)	42.44
Ending balance (in dollars per share)	41.14	$ 34.52
Weighted Average Grant Date Fair Value (per share)
Beginning balance (in dollars per share)	10.07
Options granted (in dollars per share)	0
Options vested (in dollars per share)	7.86
Options forfeited (in dollars per share)	12.50
Ending balance (in dollars per share)	$ 12.13	$ 10.07