XML 92 R79.htm IDEA: XBRL DOCUMENT v3.10.0.1
Derivatives - Schedule of Gains and Losses on Derivative Instruments (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 28, 2018
Jul. 29, 2018
Jan. 27, 2019
Jan. 28, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amt of Gain (Loss) (net of tax) Recognized in OCI on Derivative (Effective Portion) and recorded in Accrued Expenses at Fair Value $ 41 $ 15 $ 56  
Cash Flow Hedge [Member] | Foreign Currency Contract [Member] | EURO [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amt of Gain (Loss) (net of tax) Recognized in OCI on Derivative (Effective Portion) and recorded in Accrued Expenses at Fair Value     56  
Other Expense [Member] | Cash Flow Hedge [Member] | Foreign Currency Contract [Member] | EURO [Member]        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion)     (64)  
Amount of Gain (loss) (net of tax) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)     $ 0 $ 0