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Note F - Geographic and Other Information (Detail) - Geographic information (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Revenues $ 13,825,764 $ 14,338,512
Long-Lived Assets 1,235,863 1,245,487
United States [Member]
   
Revenues 4,648,472 5,805,331
Long-Lived Assets 1,235,863 1,245,487
Canada [Member]
   
Revenues 2,860,154 2,551,980
China [Member]
   
Revenues 2,462,967 2,144,451
France [Member]
   
Revenues 903,137 1,029,382
Other Countries [Member]
   
Revenues $ 2,951,034 $ 2,807,368