Contingencies And Commitments (Standby Letters Of Credit Instruments) (Details) $ in Thousands	Mar. 29, 2020 USD ($)
Contingencies, Commitments And Guarantees [Line Items]
Letters of Credit Outstanding, Amount	$ 35,454
0-12 months [Member]
Contingencies, Commitments And Guarantees [Line Items]
Letters of Credit Outstanding, Amount	20,747
Greater than 12 months [Member]
Contingencies, Commitments And Guarantees [Line Items]
Letters of Credit Outstanding, Amount	$ 14,707