Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details) (USD $)
Dec. 31, 2012
Future minimum maintenance fee payments  
2013 $ 200,000
2014 200,000
2015 200,000
2016 200,000
2017 200,000
Thereafter 1,600,000
Future minimum maintenance fee payments Net $ 2,600,000