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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Minimum future payments under these leases at March 31, 2013 are as follows:

 

2013   $ 81,000  
2014     111,000  
2015     115,000  
2016     118,000  
2017     20,000  
    $ 445,000