Quarterly report pursuant to Section 13 or 15(d)

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

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Note 2 - Goodwill, Customer Relationships and Other Intangible Assets - Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Apr. 02, 2017
Finite-lived intangible assets, gross amount $ 9,220   $ 9,220
Finite-lived intangible assets, accumulated amortization 6,281   6,092
Amortization expense 189 $ 189  
Cost of Sales [Member]      
Amortization expense 2 2  
Selling, General and Administrative Expenses [Member]      
Amortization expense 187 187  
Trademarks and Trade Names [Member]      
Finite-lived intangible assets, gross amount 1,987   1,987
Finite-lived intangible assets, accumulated amortization 1,100   1,066
Amortization expense 34 34  
Noncompete Agreements [Member]      
Finite-lived intangible assets, gross amount 98   98
Finite-lived intangible assets, accumulated amortization 69   67
Amortization expense 2 2  
Patents [Member]      
Finite-lived intangible assets, gross amount 1,601   1,601
Finite-lived intangible assets, accumulated amortization 592   565
Amortization expense 27 27  
Customer Relationships [Member]      
Finite-lived intangible assets, gross amount 5,534   5,534
Finite-lived intangible assets, accumulated amortization 4,520   $ 4,394
Amortization expense $ 126 $ 126