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Stock-Based Compensation - Summary of Restricted-Stock Awards and Restricted-Stock Units (Detail)
shares in Thousands
6 Months Ended
Aug. 01, 2020
$ / shares
shares
Time-based Restricted Stock Units [Member]  
Number of Units  
Nonvested units outstanding, beginning balance | shares 433
Granted, Number of Units | shares 810
Vested, Number of Units | shares (231)
Forfeited, Number of Units | shares (1)
Nonvested units outstanding, ending balance | shares 1,011
Weighted- Average Grant Date Fair Value (per unit)  
Weighted-Average Grant Date Fair Value (per unit), beginning balance | $ / shares $ 12.03
Granted, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 4.08
Vested, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 11.79
Forfeited, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 9.74
Weighted-Average Grant Date Fair Value (per unit), ending balance | $ / shares $ 5.72
Performance-based Restricted Stock Units [Member]  
Number of Units  
Nonvested units outstanding, beginning balance | shares 671
Granted, Number of Units | shares 602
Vested, Number of Units | shares (187)
Forfeited, Number of Units | shares (1)
Nonvested units outstanding, ending balance | shares 1,085
Weighted- Average Grant Date Fair Value (per unit)  
Weighted-Average Grant Date Fair Value (per unit), beginning balance | $ / shares $ 11.08
Granted, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 4.09
Vested, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 9.31
Forfeited, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 11.27
Weighted-Average Grant Date Fair Value (per unit), ending balance | $ / shares $ 7.51