Income Taxes (Schedule of Tax Effects of Temporary Differences that Result in Deferred Tax Assets and Liabilities) (Detail) (USD $)	May 30, 2014	May 31, 2013
Deferred tax assets
Salary continuation plan	$ 430,599	$ 467,194
Accrued vacation	557,032	539,495
Inventory capitalization	96,923	65,515
Allowance for doubtful accounts	26,600	26,600
Other accrued expenses	284,350	141,511
Gross deferred tax assets before valuation allowance	1,395,504	1,240,315
Less valuation allowance	0	0
Total deferred tax assets	1,395,504	1,240,315
Deferred tax liabilities
Property and equipment	3,700,884	3,867,929
Prepaid expenses	104,337	80,570
Total deferred tax liabilities	3,805,221	3,948,499
Net deferred tax liability	$ 2,409,717	$ 2,708,184