Prepaid Expenses (Detail) (USD $)	Jun. 01, 2012	Jun. 03, 2011
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Truck shop supplies	$ 576,673	$ 657,788
Insurance deposit	82,959	138,959
Prepaid marketplace spending	227,382	239,157
Prepaid insurance	159,941	168,712
Prepaid taxes and licenses	168,110	152,115
Prepaid dues and supplies	499,905	413,805
Other prepaid	39,904	33,291
Prepaid expenses	$ 1,754,874	$ 1,803,827