Closures and Impairments Expense, Including Goodwill (Details) (USD $)	3 Months Ended		12 Months Ended
	Jun. 05, 2012	Feb. 28, 2012	Jun. 05, 2012	May 31, 2011	Jun. 01, 2010
Closures and impairment expenses [Abstract]
Property impairments	$ 9,700,000		$ 13,633,000	$ 6,098,000	$ 3,181,000
Closed restaurant lease reserves			3,841,000	(333,000)	756,000
Other closing expense			1,869,000	437,000	859,000
Loss/(gain) on sale of surplus properties			(678,000)	47,000	(1,020,000)
Total closure and impairments expenses			18,665,000	6,249,000	3,776,000
Minimum number of restaurants closed		25
Maximum number of restaurants closed		27
Number Of Restaurants Closed	23
Closed property future Lease Obligation [Roll Forward]
Beginning of year			2,660,000	4,969,000
Closing expense including rent and other lease charges			3,841,000	(333,000)
Transfer of deferred escalating minimum rent balance			2,055,000	0
Lease obligation assumed with franchise acquisitions			0	396,000
Payments			(1,605,000)	(2,372,000)
Other adjustments			(138,000)	0
Ending of year	6,813,000		6,813,000	2,660,000	4,969,000
Goodwill impairment	16,919,000		16,919,000
Goodwill impairment loss, net of tax	$ 12,000,000		$ 12,000,000