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Organization and Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2013
Organization and Summary of Significant Accounting Policies [Abstract]  
Assets measured at fair value on recurring basis
The following table shows by level, within the fair value hierarchy, the fair value of the Company's assets that are measured and recorded at fair value on a recurring basis:

 
March 31, 2013
 
 
December 31, 2012
 
 
Total
 
 
Level
1
 
 
Level
2
 
 
Level
3
 
 
Total
 
 
Level
1
 
 
Level
2
 
 
Level
3
 
Money market funds included in cash and cash equivalents
 
$
2,239,800
 
 
$
2,239,800
 
 
$
-
 
 
$
-
 
 
$
1,239,500
 
 
$
1,239,500
 
 
$
-
 
 
$
-
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
2,239,800
 
 
$
2,239,800
 
 
$
-
 
 
$
-
 
 
$
1,239,500
 
 
$
1,239,500
 
 
$
-
 
 
$
-