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Marketable Securities (Tables)
6 Months Ended
Jun. 30, 2013
Marketable Securities [Abstract]  
Available-for-sale marketable securities
The following is a summary of the Company's available for sale marketable securities at June 30, 2013 and December 31, 2012:

June 30, 2013
 
Adjusted Cost
 
 
Value Fair
 
 
Unrealized Holding Gain(loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Bonds
 
$
250,000
 
 
$
254,000
 
 
$
4,000
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2012
 
 
 
 
 
 
 
 
 
 
 
 
Corporate Bonds
 
$
257,000
 
 
 
251,000
 
 
$
(6,000
)