Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	May. 28, 2015	May. 29, 2014	May. 30, 2013
General [Line Items]
Depreciation	$ 38,368,000	$ 33,329,000	$ 33,469,000
Percentage Of Cash Dividends	110.00%
Senior Notes	$ 101,429,000
Inventory, Net	2,456,000	2,319,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount	138,000	139,000
Interest Costs Capitalized	194,000	256,000	$ 75,000
Deferred Revenue, Current	$ 18,502,000	$ 16,028,000
Effective Income Tax Rate Reconciliation, Tax Settlement, Percent	50.00%
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	434,000	469,000	1,402,000
Concentration Risk, Labor Subject to Collective Bargaining Arrangements	As of May 28, 2015, 8% of the Companys employees were covered by a collective bargaining agreement, of which 75% are covered by an agreement that will expire in one year. As of May 29, 2014, 9% of the Companys employees were covered by a collective bargaining agreement, of which 0% were covered by an agreement that expired within one year.
Amortization of Financing Costs	$ 419,000	$ 491,000	$ 348,000
Corporate Joint Venture Two [Member]
General [Line Items]
Ownership Interest In Joint Ventures	50.00%
Maximum [Member]
General [Line Items]
Investment Options, Exercise Price	$ 23.37	$ 23.37	$ 23.37
Equity Method Investment, Ownership Percentage	50.00%
Minimum [Member]
General [Line Items]
Investment Options, Exercise Price	$ 18.34	$ 14.40	$ 12.73
Minimum [Member] | Corporate Joint Venture One [Member]
General [Line Items]
Ownership Interest In Joint Ventures	50.00%
Fair Value, Inputs, Level 1 [Member]
General [Line Items]
Available-for-sale Securities	$ 70,000	$ 70,000
Fair Value, Inputs, Level 2 [Member]
General [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value		$ 56,000
Senior Notes	105,556,000
Interest Rate Fair Value Hedge Liability at Fair Value	$ 28,000