Prepaid Expenses (Detail) (USD $)	Mar. 01, 2013	Jun. 01, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items]
Truck shop supplies	$ 476,146	$ 576,673
Insurance deposit	82,959	82,959
Prepaid marketplace spending	203,659	227,382
Deferred advertising fees	394,551
Prepaid insurance	439,323	159,941
Prepaid taxes/licenses	129,483	168,110
Prepaid dues/supplies	234,101	499,905
Other	118,410	39,904
Prepaid assets	$ 2,078,632	$ 1,754,874