Stock Based Compensation - Plans - (Details)	Oct. 28, 2017 shares
1987 Plan
Authorized And Available For Grant [Line Items]
Options And/Or Restrcited Stock Initially Authorized	5,850,000
Options And Or Restricted Stock Available For Grant	0
2004 Plan
Authorized And Available For Grant [Line Items]
Options And/Or Restrcited Stock Initially Authorized	1,350,000
Options And Or Restricted Stock Available For Grant	0
2013 Plan
Authorized And Available For Grant [Line Items]
Options And/Or Restrcited Stock Initially Authorized	1,500,000
Options And Or Restricted Stock Available For Grant	852,491