| 
           4. Condensed Consolidated Balance Sheets (Details - Inventories) (USD $) 
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           Sep. 30, 2014 
         | 
        
           Mar. 31, 2014 
         | 
      
|---|---|---|
| Inventories, net | $ 1,235,000 | $ 1,088,000 | 
| 
           Raw Materials [Member] 
         | 
        ||
| Inventories, net | 796,000 | 743,000 | 
| 
           Finished Goods [Member] 
         | 
        ||
| Inventories, net | $ 439,000 | $ 345,000 | 
| X | ||||||||||
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- Definition 
          Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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