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Employee Benefit Plans (Schedule of Changes in the Liability for the Salary Continuation Plan) (Detail) (USD $)	12 Months Ended
	May 31, 2013	Jun. 01, 2012
Compensation Related Costs [Abstract]
Accrued salary continuation plan - beginning of year	$ 1,279,233	$ 1,379,557
Benefits accrued	131,804	67,337
Benefits paid	(181,578)	(167,661)
Accrued salary continuation plan - end of year	$ 1,229,459	$ 1,279,233

The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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