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Organization and Summary of Significant Accounting Policies (Details 2) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Reconciliation of basic and diluted net income per share    
Net income available to common stockholders for basic and diluted net income per share of common stock $ 2,396,358 $ 1,622,600
Weighted average common stock outstanding - basic 3,503,502 2,894,586
Weighted average common stock outstanding - diluted 3,503,502 2,894,586
Net income per common share - basic $ 0.68 $ 0.56
Net income per common share - diluted $ 0.68 $ 0.56