Equity (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 29, 2014	Nov. 30, 2013	Nov. 29, 2014		Nov. 30, 2013
Schedule of Stockholders Equity [Line Items]
Balance			$ 594,745
Dividends			(21,422)	[1]
Other comprehensive income	(35)	185	(45)		139
Distribution to noncontrolling interest partners			(655)
Proceeds from stock option exercise			60
Restricted stock compensation expense			927
Net income	36,861	26,247	65,046		35,145
Balance	638,656		638,656
Percentage of net income used to compute accrued dividends			33.33%
Treasury Stock [Member]
Schedule of Stockholders Equity [Line Items]
Balance			(20,453)
2-for-1 stock split effected in the form of a dividend			(133)
Proceeds from stock option exercise			16
Balance	(20,570)		(20,570)
Paid In Capital [Member]
Schedule of Stockholders Equity [Line Items]
Balance			40,476
2-for-1 stock split effected in the form of a dividend			132
Proceeds from stock option exercise			44
Restricted stock compensation expense			927
Balance	41,579		41,579
Accumulated Other Comprehensive Loss [Member]
Schedule of Stockholders Equity [Line Items]
Balance			561
Other comprehensive income			(45)
Balance	516		516
Retained Earnings [Member]
Schedule of Stockholders Equity [Line Items]
Balance			572,874
Dividends			(21,422)	[1]
2-for-1 stock split effected in the form of a dividend			(375)
Net income			64,258
Balance	615,335		615,335
Noncontrolling Interests [Member]
Schedule of Stockholders Equity [Line Items]
Balance			912
Distribution to noncontrolling interest partners			(655)
Net income			788
Balance	1,045		1,045
Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Balance			351
2-for-1 stock split effected in the form of a dividend			352
Balance	703		703
Class A Common Stock [Member]
Schedule of Stockholders Equity [Line Items]
Balance			24
2-for-1 stock split effected in the form of a dividend			24
Balance	$ 48		$ 48

[1] Dividends are calculated as 1/3 of net income after prior period loss (includes adjustment for actual dividends paid based on accrual from previous period).