Prepaid Expenses (Detail) (USD $)	May 30, 2014	May 31, 2013
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Truck shop supplies	$ 351,985	$ 445,504
Insurance deposit	58,548	82,959
Prepaid marketplace spending	274,571	212,026
Prepaid insurance	274,389	257,757
Prepaid taxes and licenses	88,858	59,203
Prepaid dues and supplies	7,742	413,100
Other prepaid	221,768	84,188
Prepaid expenses	$ 1,277,861	$ 1,554,737