Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Other Intangible Assets

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Note 2 - Goodwill, Customer Relationships and Other Intangible Assets (Details) - Other Intangible Assets (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Sep. 28, 2014
Sep. 29, 2013
Mar. 30, 2014
Finite-Lived Intangible Assets [Line Items]          
Gross Amount $ 13,024   $ 13,024   $ 13,024
Accumulated Amortization 8,153   8,153   7,776
Amortization Expense 183 186 377 369  
Cost of Sales [Member]
         
Finite-Lived Intangible Assets [Line Items]          
Amortization Expense 2 14 16 30  
Operating Expense [Member]
         
Finite-Lived Intangible Assets [Line Items]          
Amortization Expense 181 172 361 339  
Trademarks and Trade Names [Member]
         
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 1,987   1,987   1,987
Accumulated Amortization 735   735   669
Amortization Expense 33 33 66 66  
Licensing Agreements [Member]
         
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 3,571   3,571   3,571
Accumulated Amortization 3,571   3,571   3,571
Amortization Expense       2  
Noncompete Agreements [Member]
         
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 454   454   454
Accumulated Amortization 407   407   391
Amortization Expense 2 14 16 28  
Patents [Member]
         
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 1,601   1,601   1,601
Accumulated Amortization 296   296   242
Amortization Expense 27 18 54 32  
Customer Relationships [Member]
         
Finite-Lived Intangible Assets [Line Items]          
Gross Amount 5,411   5,411   5,411
Accumulated Amortization 3,144   3,144   2,903
Amortization Expense $ 121 $ 121 $ 241 $ 241