Commitments and Contingencies (Loan Contracts with Off-Balance Sheet Commitments) (Details) - USD ($) $ in Thousands	Dec. 26, 2020	Mar. 28, 2020
Loan Contracts with Off-Balance Sheet Commitments
Construction loan contract amount	$ 41,763	$ 31,136
Construction Advances	(13,923)	(13,400)
Remaining construction contingent commitment	$ 27,840	$ 17,736

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant