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K - SUMMARIZED QUARTERLY FINANCIAL DATA (UNAUDITED)
12 Months Ended
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]  
K - SUMMARIZED QUARTERLY FINANCIAL DATA (UNAUDITED)
                                                   
    2014   2013  
    First
Quarter
  Second
Quarter
  Third
Quarter
  Fourth
Quarter
  First
Quarter
  Second
Quarter
  Third
Quarter
  Fourth
Quarter
 
Revenue   $ 3,718,000     3,705,000     3,454,000     4,975,000   $ 4,266,000     4,278,000     3,666,000     4,191,000  
Net income (loss)   $ 28,000     (6,077,000 )*   (1,456,000 )   948,000   $ (1,369,000 )   (1,353,000 )   (1,644,000 )   (1,546,000 )
Earnings (loss) per share:                                                  
Basic   $ .00     (.28 )   (.07 )   .04   $ (.06 )   (.06 )   (.07 )   (.07 )
Diluted   $ .00     (.28 )   (.07 )   .04   $ (.06 )   (.06 )   (.07 )   (.07 )
                                                   
•     Includes $4,300,000 (0.19 per share) loss related to arbitration settlement (see Note J3).