Postretirement Benefit Plans (Schedule of Fair Value of Pension Assets) (Details) - USD ($) $ in Thousands	Mar. 25, 2017	Mar. 26, 2016
Defined Benefit Plan Disclosure [Line Items]
Assets, Fair Value Disclosure	$ 22,143	$ 25,688
Cash [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets, Fair Value Disclosure	160	42
Pension Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets, Fair Value Disclosure	21,983	25,646
Quoted Prices In Active Markets For Identical Assets Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets, Fair Value Disclosure	160	42
Quoted Prices In Active Markets For Identical Assets Level 1 [Member] | Cash [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets, Fair Value Disclosure	160	42
Significant Other Observable Inputs Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets, Fair Value Disclosure	21,983	25,646
Significant Other Observable Inputs Level 2 [Member] | Pension Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets, Fair Value Disclosure	$ 21,983	$ 25,646