General (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 28, 2014		Aug. 29, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning Balance, Swap Agreements	$ 34		$ 18
Fair market value adjustment of interest rate swap, net of tax effect of $25 and $158, respectively	40		241
Reclassification adjustment on interest rate swap included in interest expense, net of tax effect of $20 and $18, respectively	29	[1]	27	[1]
Net other comprehensive income (loss), Swap Agreements	69		268
Ending Balance, Swap Agreements	103		286
Beginning Balance, Available for Sale Investments	(11)		(10)
Other comprehensive income (loss) before reclassifications, Available for Sale Investments	0		(1)
Amounts reclassified from accumulated other comprehensive loss, Available for Sale Investments	0	[1]	0	[1]
Net other comprehensive income (loss), Available for Sale Investments	0		(1)
Ending Balance, Available for Sale Investments	(11)		(11)
Beginning Balance, Pension Obligation	(4,581)		(3,836)
Other comprehensive income (loss) before reclassifications, Pension Obligation	0		0
Amounts reclassified from accumulated other comprehensive loss, Pension Obligation	0	[1]	0	[1]
Net other comprehensive income (loss), Pension Obligation	0		0
Ending Balance, Pension Obligation	(4,581)		(3,836)
Beginning Balance, Accumulated Other Comprehensive Loss	(4,558)		(3,828)
Other comprehensive income (loss) before reclassifications, Accumulated Other Comprehensive Loss	40		240
Amounts reclassified from accumulated other comprehensive loss, Accumulated Other Comprehensive Loss	29	[1]	27	[1]
Net other comprehensive income (loss), Accumulated Other Comprehensive Loss	69		267
Ending Balance, Accumulated Other Comprehensive Loss	$ (4,489)		$ (3,561)

[1] Amounts are included in interest expense in the consolidated statements of earnings.