Postretirement Benefit Plans (Amount to be Amortized from Accumulated Other Comprehensive Income in Next Fiscal Year) (Details) $ in Thousands	12 Months Ended
Mar. 25, 2017 USD ($)
Postretirement Benefit Plans [Abstract]
Transition (asset) obligation	$ 0
Prior service cost	0
Actuarial loss (gain)	$ (37)

Amount included in accumulated other comprehensive income (AOCI) related to transition obligation (asset) expected to be recognized as components of net periodic benefit cost (credit) for the fiscal year that follows the most recent annual statement of financial position.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (s)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanAmortizationOfNetTransitionAssetObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration