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Derivatives and Hedging Activities - Summary of Open Foreign Currency Contracts (Details) $ in Thousands, $ in Thousands | Jul. 29, 2018 USD ($) | Jul. 29, 2018 CAD ($)
--- | --- | ---
Derivative [Line Items] |  |
Number of Instruments | 6 | 6
Sell USD/Buy CAD Forward Contract [Member] |  |
Derivative [Line Items] |  |
Number of Instruments | 6 | 6
Short [Member] | Sell USD/Buy CAD Forward Contract [Member] |  |
Derivative [Line Items] |  |
Notional Value | $ 8,560 |
Long [Member] | Sell USD/Buy CAD Forward Contract [Member] |  |
Derivative [Line Items] |  |
Notional Value |  | $ 11,000

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