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Supplemental Disclosure of Cash Flow Information (Details Textual) (USD $)
 12 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Mar. 26, 2011
Schedule of Trading Securities and Other Trading Assets [Line Items]      
Other comprehensive income in connection with interest rate swap contracts     $ 190,000 [1]
Supplemental Disclosure Of Cash Flow Information (Textual) [Abstract]      
Capital leases - property, plant and equipment 2,567,000 1,400,000 1,065,000
Capital leases - long-term debt 2,567,000 1,400,000 1,065,000
Other non current assets pension liability adjustment    (3,033,000)  
Other comprehensive income pension liability adjustment    (1,977,000)  
Long term deferred taxes pension liability adjustment    (1,212,000)  
Other long term liabilities pension liability adjustment    156,000  
Change in current liabilities related to tax benefit from exercise of stock options (2,764,000) (5,314,000) (3,538,000)
Tax benefit from exercise of stock options 2,764,000 5,314,000 3,531,000
Long-term deferred taxes in connection with accounting for income tax benefits related to the exercise of stock options     7,000
Current liabilities, exercise of stock options 601,000 5,485,000 1,120,000
Common stock issued exercise of stock options 2,000 6,000 1,000
Paid in capital exercise of stock options 2,968,000 8,685,000 606,000
Treasury stock exercise of stock options 3,571,000 14,176,000 1,727,000
Deferred income taxes-financing obligation-inception 1,164,000    
Property, plant and equiptment-financing obligation-inception 200,000    
Goodwill-financing obligation-inception 1,899,000    
Capital lease and financing obligation-financing obligation-inception 629,000    
Other long-term liabilities-financing obligation-inception 2,567,000    
Intangible assets-financing obligations-inception $ (67,000)    
[1] The balance related to the derivatives contracts was $(190) at March 27, 2010.