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Organization and Summary of Significant Accounting Policies (Details 1) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 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 $ 2,217,904 $ 2,322,553 $ 4,614,262 $ 3,945,153
Weighted average common stock outstanding - basic 3,632,222 2,955,786 3,568,219 2,925,355
Weighted average common stock outstanding - diluted 3,632,222 2,955,786 3,568,219 2,925,355
Net income per common share - basic $ 0.61 $ 0.79 $ 1.29 $ 1.35
Net income per common share - diluted $ 0.61 $ 0.79 $ 1.29 $ 1.35