Line of Credit (Detail) (USD $)	May 31, 2013	Jun. 01, 2012
Line Of Credit Facility [Abstract]
Line-of-credit agreement, maximum borrowing capacity	$ 3,000,000	$ 3,000,000
Line-of-credit, outstanding debt	1,725,289	1,293,698
Line-of-credit, interest rate	3.25%	3.50%
Line-of-credit, available credit	$ 1,274,711	$ 1,706,302