Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information - Accounting Changes (Detail)

v3.7.0.1
Summary of Significant Accounting Policies - Additional Information - Accounting Changes (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 29, 2017
Jul. 29, 2017
Accounting Standards Update 2016-09 [Member]    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
New accounting pronouncement, Effect of adoption, Quantification $ 1,406 $ 9,139