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Note 8 - Related Party Transactions (Tables)
6 Months Ended
Sep. 27, 2015
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions [Table Text Block]
   

Three Months Ended

   

Six Months Ended

 
   

September 27,

2015

   

September 28,

2014

   

September 27,

2015

   

September 28,

2014

 

Alonim

    25%       20%       27%       24%  
   

September 27,

2015

   

March 29,

2015

 

Alonim

    17%       6%