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Note 7 - Company Operations (Detail) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Number of Operating Segments 3  
Number of Customers 4 5
Customer 1 [Member]
   
Entity-Wide Revenue, Major Customer, Amount 1,324,000 301,000
Customer 2 [Member]
   
Entity-Wide Revenue, Major Customer, Amount 286,000 279,000
Customer 3 [Member]
   
Entity-Wide Revenue, Major Customer, Amount 216,000 228,000
Customer 4 [Member]
   
Entity-Wide Revenue, Major Customer, Amount 179,000 117,000
Customer 5 [Member]
   
Entity-Wide Revenue, Major Customer, Amount   110,000