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Stockholder's Equity (Narratives1) (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Stock compensation $ 159,682 $ 166,787    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 136,104   62,805 63,777
DividendsCash 1,137,000 1,009,000    
Dividends Payable, Amount Per Share $ 0.543 $ 0.543    
Dividends, Preferred Stock, Cash $ 27,000 $ 27,000