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Operating Leases (Tables)
9 Months Ended
Sep. 30, 2012
Operating Leases [Abstract]  
Summary of total lease and operating expense
                 
    2012     2011  

Three Months Ended

  $ 174,278     $ 163,496  

Nine Months Ended

    512,529       450,517  
Future minimum lease payments under the operating leases
                                     
2012     2013     2014     2015     2016  
112,000     $ 417,000     $ 397,000     $ 401,000     $ 234,000