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Fair Value Measurements - Fair Value Hierarchy (Details) - USD ($)
May 04, 2018
Oct. 31, 2017
May 05, 2017
Assets:      
Derivative assets $ 1,213,000 $ 1,041,000 $ 2,831,000
Liabilities:      
Derivative liabilities 1,505,000 2,266,000 0
Transfer of assets from level 1 to level 2 0 0 0
Transfer of assets from level 2 to level 1 0 0 0
Transfer of liabilities from level 1 to level 2 0 0 0
Transfer of liabilities from level 2 to level 1 0 0 0
Forward currency contracts      
Assets:      
Derivative assets 1,213,000 1,041,000 2,831,000
Liabilities:      
Derivative liabilities 1,505,000 2,266,000 0
Measured on a recurring basis      
Assets:      
Total assets 1,213,000 1,041,000 2,831,000
Liabilities:      
Total liabilities 1,505,000 2,266,000 0
Measured on a recurring basis | Forward currency contracts      
Assets:      
Derivative assets 1,213,000 1,041,000 2,831,000
Liabilities:      
Derivative liabilities 1,505,000 2,266,000 0
Measured on a recurring basis | Level 2      
Assets:      
Total assets 1,213,000 1,041,000 2,831,000
Liabilities:      
Total liabilities 1,505,000 2,266,000 0
Measured on a recurring basis | Level 2 | Forward currency contracts      
Assets:      
Derivative assets $ 1,213,000 1,041,000 2,831,000
Liabilities:      
Derivative liabilities   $ 2,266,000 $ 0