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Note 4 - Segment Information (Tables)
3 Months Ended
Jun. 29, 2013
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
First Quarter Ended
 
   
June 29,
2013
   
June 30,
2012
 
 Revenue:
           
Distribution Sales
  $ 16,971     $ 16,365  
Service Revenue
    11,739       8,732  
Total
    28,710       25,097  
                 
Gross Profit:
               
Distribution
    4,018       4,210  
Service
    3,196       1,997  
Total
    7,214       6,207  
                 
Operating Expenses:
               
Distribution (1)
    3,327       3,358  
Service (1)
    2,735       2,255  
Total
    6,062       5,613  
                 
Operating Income (Loss):
               
Distribution (1)
    691       852  
Service (1)
    461       (258 )
Total
    1,152       594  
                 
Unallocated Amounts:
               
Interest and Other Expense, net
    4       47  
Provision for Income Taxes
    427       186  
Total
    431       233  
                 
Net Income
  $ 721     $ 361