Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Goodwill, Customer Relationships and Other Intangible Assets - Other Intangible Assets (Details)

v3.5.0.2
Note 3 - Goodwill, Customer Relationships and Other Intangible Assets - Other Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Oct. 02, 2016
Sep. 27, 2015
Oct. 02, 2016
Sep. 27, 2015
Apr. 03, 2016
Trademarks and Trade Names [Member]          
Finite-lived intangible assets, gross amount $ 1,987   $ 1,987   $ 1,987
Finite-lived intangible assets, accumulated amortization 1,000   1,000   933
Amortization expense 33 $ 33 67 $ 66  
Noncompete Agreements [Member]          
Finite-lived intangible assets, gross amount 98   98   98
Finite-lived intangible assets, accumulated amortization 63   63   60
Amortization expense 1 1 3 3  
Patents [Member]          
Finite-lived intangible assets, gross amount 1,601   1,601   1,601
Finite-lived intangible assets, accumulated amortization 512   512   458
Amortization expense 27 27 54 54  
Customer Relationships [Member]          
Finite-lived intangible assets, gross amount 5,534   5,534   5,534
Finite-lived intangible assets, accumulated amortization 4,140   4,140   3,887
Amortization expense 127 128 253 248  
Cost of Sales [Member]          
Amortization expense 1 1 3 3  
Selling, General and Administrative Expenses [Member]          
Amortization expense 187 188 374 368  
Finite-lived intangible assets, gross amount 9,220   9,220   9,220
Finite-lived intangible assets, accumulated amortization 5,715   5,715   $ 5,338
Amortization expense $ 188 $ 189 $ 377 $ 371