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Commitments and Contingencies (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Leases    
Rent expense $ 339,000 $ 341,000
Operating Leases    
2013 403,000  
2014 398,000  
2015 389,000  
2016 389,000  
2017 and thereafter 130,000  
Future minimum lease obligations 1,709,000  
Capital Lease Obligations    
2013 112,000  
2014 89,000  
2015 28,000  
Future minimum lease obligations 229,000  
Total    
2013 515,000  
2014 487,000  
2015 417,000  
2016 389,000  
2017 and thereafter 130,000  
Future minimum lease obligations $ 1,938,000