Quarterly report pursuant to Section 13 or 15(d)

Nature Of Business Summary Of Significant Accounting Policies - Cash and cash equivalents (Details)

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Nature Of Business Summary Of Significant Accounting Policies - Cash and cash equivalents (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Dec. 31, 2010
Notes to Financial Statements        
Cash in excess of FDIC limits $ 21,963,000      
Cash 1,041,000 1,135,000    
Money Market fund 21,172,000 19,526,000    
Cash and cash equivalents $ 22,213,000 $ 20,661,000 $ 23,072,000 $ 21,348,000