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Stock-Based Compensation - Summary of Restricted-Stock Awards and Restricted-Stock Units (Detail)
shares in Thousands
6 Months Ended
Jul. 29, 2017
$ / shares
shares
Time-based Restricted Stock Units [Member]  
Number of Units  
Nonvested units outstanding, beginning balance | shares 487
Granted, Number of Units | shares 294
Vested, Number of Units | shares (237)
Forfeited, Number of Units | shares (134)
Nonvested units outstanding, ending balance | shares 410
Weighted- Average Grant Date Fair Value (per unit)  
Weighted-Average Grant Date Fair Value (per unit), beginning balance | $ / shares $ 18.04
Granted, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 9.31
Vested, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 18.12
Forfeited, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 14.15
Weighted-Average Grant Date Fair Value (per unit), ending balance | $ / shares $ 13.00
Performance-based Restricted Stock Units [Member]  
Number of Units  
Nonvested units outstanding, beginning balance | shares 375
Granted, Number of Units | shares 212
Vested, Number of Units | shares 0
Forfeited, Number of Units | shares (95)
Nonvested units outstanding, ending balance | shares 492
Weighted- Average Grant Date Fair Value (per unit)  
Weighted-Average Grant Date Fair Value (per unit), beginning balance | $ / shares $ 19.10
Granted, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 9.31
Vested, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 0.00
Forfeited, Weighted-Average Grant Date Fair Value (per unit) | $ / shares 24.97
Weighted-Average Grant Date Fair Value (per unit), ending balance | $ / shares $ 13.96