Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock Previously reported	Common Stock As adjusted	Common Stock	Additional Paid-in Capital Previously reported	Additional Paid-in Capital As adjusted	Additional Paid-in Capital	Retained earnings Previously reported	Retained earnings As adjusted	Retained earnings	Previously reported	As adjusted	Total
Balance - Stockholder's Equity at Jan. 28, 2017			$ 604			$ 548,301			$ (14,035)			$ 534,870
Balance - Stockholder's Equity (in shares) at Jan. 28, 2017			60,366,768
Increase (Decrease) in Stockholders' Equity
Stock-based compensation						13,764						13,764
Exercise of stock options and other awards			$ 10			10,423						10,433
Exercise of stock options and other awards (in shares)			1,056,630
Net income (loss)									31,812			31,812
Balance - Stockholder's Equity at Jan. 27, 2018			$ 614			572,488			17,777			590,879
Balance - Stockholder's Equity (in shares) at Jan. 27, 2018			61,423,398
Increase (Decrease) in Stockholders' Equity
Adoption of ASU No. 2016-02, Leases | ASU 2016-02									98,594			98,594
Stock-based compensation						49,526						49,526
Exercise of stock options and other awards			$ 22			21,663						21,685
Exercise of stock options and other awards (in shares)			2,186,286
Net income (loss)									48,996			48,996
Balance - Stockholder's Equity at Jan. 26, 2019	$ 636	$ 636		$ 643,677	$ 643,677		$ 66,773	$ 165,367		$ 711,086	$ 809,680	711,086
Balance - Stockholder's Equity (in shares) at Jan. 26, 2019	63,609,684	63,609,684
Increase (Decrease) in Stockholders' Equity
Stock-based compensation						7,423						7,423
Exercise of stock options and other awards			$ 5			5,938						5,943
Exercise of stock options and other awards (in shares)			496,377
Net income (loss)									(214,435)			(214,435)
Balance - Stockholder's Equity at Jan. 25, 2020			$ 641			$ 657,038			$ (49,068)			$ 608,611
Balance - Stockholder's Equity (in shares) at Jan. 25, 2020			64,106,061