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Note 8 - Segments and Geographic Information (Tables)
3 Months Ended
Mar. 31, 2013
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three months ended
 
   
March 31,
 
   
2013
   
2012
 
Solutions:
           
Net sales
  $ 1,807     $ 1,640  
Cost of sales
    1,523       1,562  
Gross profit
    284       78  
Operating expenses:
               
Sales and marketing
    270       314  
General and administrative
    202       150  
Total operating expenses
    472       464  
Segment loss
  $ (188 )   $ (386 )
                 
Products:
               
Net sales
  $ 3,526     $ 3,662  
Cost of sales
    2,609       2,955  
Gross profit
    917       707  
Operating expenses (income):
               
Research and development
    37       46  
Sales and marketing
    797       861  
General and administrative
    74       81  
Total operating expenses
    908       988  
Segment income (loss)
  $ 9     $ (281 )
                 
Reconciliation of segment income (loss) to net loss:
               
Segment income (loss):
               
Solutions
  $ (188 )   $ (386 )
Products
    9       (281 )
Total segment loss
    (179 )     (667 )
Operating expenses:
               
Sales and marketing
    236       96  
General and administrative
    790       923  
Total operating expenses
    1,026       1,019  
Other expense
    (220 )     (178 )
Loss before income taxes
    (1,425 )     (1,864 )
Provision for income  taxes
    (3 )     (3 )
Net loss
  $ (1,428 )   $ (1,867 )
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]
   
Three months ended
March 31,
 
   
2013
   
2012
 
             
United States
  $ 4,732     $ 4,787  
International
    601       515  
Net sales
  $ 5,333     $ 5,302  
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]
   
March 31,
2013
   
December 31,
2012
 
United States
  $ 2,254     $ 2,350  
International
    54       58  
Long-lived assets, net
  $ 2,308     $ 2,408  
Products Segment [Member]
 
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three months ended
March 31,
 
   
2013
   
2012
 
Products segment net sales:
           
Pool and commercial products
  $ 2,516     $ 2,290  
Government products/R&D services
    1,010       1,372  
Total products segment net sales
    3,526       3,662  
                 
Products segment cost of sales:
               
Pool and commercial products
    1,710       1,631  
Government products/R&D services
    899       1,324  
Total products segment cost of sales
    2,609       2,955  
                 
Products segment gross profit (loss):
               
Pool and commercial products
    806       659  
Government products/R&D services
    111       48  
Total products segment gross profit
  $ 917     $ 707