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Retirement Plans (Details) (USD $)
12 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Mar. 27, 2011
Retirement Plans [Abstract]      
Defined contribution plan expense $ 610,700 $ 505,900 $ 610,000
Common stock shares included in plan assets (in shares) 137,555    
Cash surrender value of life insurance policy 1,282,200 1,021,600  
Net present value of benefit obligation $ 983,300 $ 912,000