Contingencies And Commitments (Standby Letters Of Credit Instruments) (Details) $ in Thousands	Oct. 01, 2017 USD ($)
Contingencies, Commitments And Guarantees [Line Items]
Letters of Credit Outstanding, Amount	$ 40,433
0-12 months [Member]
Contingencies, Commitments And Guarantees [Line Items]
Letters of Credit Outstanding, Amount	11,709
Greater than 12 months [Member]
Contingencies, Commitments And Guarantees [Line Items]
Letters of Credit Outstanding, Amount	$ 28,724