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SELECTED STATEMENT OF OPERATIONS DATA (Details 6) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income:      
Interest on bank deposits and short-term investments $ 97 $ 260 $ 157
Non-dollar currency gains - net 17 23 0
Income from Marketable securities 33 0 0
Interest on available for sale securities 35 47 154
Other Nonoperating Income 182 330 311
Expenses:      
Non-dollar currency losses - net 0 0 (58)
Bank commissions and charges (19) (8) (21)
Realized loss on sale of available for sale securities 0 (24) (61)
Other Nonoperating Expense (19) (32) (140)
Other Nonoperating Income (Expense) $ 163 $ 298 $ 171