Schedule of Estimated Amortization Expense for Future Periods (Detail) $ in Thousands |
Jan. 30, 2016
USD ($)
|
|---|---|
| Finite-Lived Intangible Assets [Line Items] | |
| Estimated amortization expense 2017 | $ 868 |
| Estimated amortization expense 2018 | 835 |
| Estimated amortization expense 2019 | 793 |
| Estimated amortization expense 2020 | 734 |
| Estimated amortization expense 2021 | $ 543 |