Additional Balance Sheet Information (Details Textual) - USD ($)	12 Months Ended
	May. 28, 2015	May. 29, 2014	May. 30, 2013
Regulatory Asset, Amortization Period	40 years
Amortization Of Intangible Assets	$ 334,000	$ 334,000	$ 334,000
Commitment Minimum Lease Payments	6,163,000
Payments Obligation Reduced Amount	5,053,000
Allowance for Doubtful Accounts Receivable	245,000	1,423,000
Furniture and Fixtures [Member]
Capital Leases, Balance Sheet, Assets by Major Class, Net	45,510,000	45,510,000
Digital Systems [Member]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 18,435,000	12,259,000
Cdf 2 Holdings [Member]
Master Licensing Agreement Term	10 years
Off-Market Favorable Lease [Member]
Amortization of Leased Asset	$ 13,353,000
Finite-Lived Intangible Assets, Accumulated Amortization	$ 3,339,000	$ 3,005,000