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Note 4 - Segment Information (Details) - Segment Information (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Jun. 28, 2014
Jun. 29, 2013
Revenue:    
Net Revenue $ 29,119 $ 28,710
Gross Profit:    
Gross Profit 6,669 7,214
Operating Expenses:    
Operating Expenses 5,910 6,062
Operating Income:    
Operating Income (Loss) 759 1,152
Unallocated Amounts:    
Interest and Other Expense, net 45 4
Provision for Income Taxes 269 427
Total 314 431
Net Income 445 721
Distribution Sales [Member]
    
Revenue:    
Net Revenue 16,981 16,971
Gross Profit:    
Gross Profit 3,732 4,018
Operating Expenses:    
Operating Expenses 3,240 [1] 3,327 [1]
Operating Income:    
Operating Income (Loss) 492 [1] 691 [1]
Service Segment [Member]
    
Revenue:    
Net Revenue 12,138 11,739
Gross Profit:    
Gross Profit 2,937 3,196
Operating Expenses:    
Operating Expenses 2,670 [1] 2,735 [1]
Operating Income:    
Operating Income (Loss) $ 267 [1] $ 461 [1]
[1] Operating expense allocations between segments were based on actual amounts, a percentage of revenues, headcount, and management's estimates.