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Significant Accounting Policies (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 22, 2017
Dec. 29, 2018
Dec. 30, 2017
Dec. 29, 2018
Dec. 30, 2017
U.S. statutory tax rate (in percent) 21.00% 15.00% 23.90%    
Previously U.S. statutory tax rate (in percent) 35.00%     14.60%  
Percentage of total net sales   6.00%   6.00%  
Cost of sales   $ 103,326 $ 102,086 $ 316,669 $ 306,366
Single Performance [Member]          
Percentage of total net sales   94.00%   94.00%  
Accounting Standards Update 2017-07 [Member]          
Reclassification net periodic benefit cost     159   477
Cost of sales     107   321
Other, net     $ 52   $ 156
Maximum [Member]          
Percentage of total net sales   1.00%   1.00%