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Summary of Significant Accounting Policies (Details 1) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Schedule of reconciliation of basic and diluted earnings per share        
Net income $ 2,347,926 $ 11,279,117 $ 2,440,952 $ 15,414,915
Weighted average shares outstanding - basic 8,310,159 8,308,404 8,310,159 8,307,823
Effect of dilutive securities:        
Options granted
Weighted average shares outstanding - diluted 8,310,159 8,308,404 8,310,159 8,307,823
Earnings per share - basic $ 0.29 $ 1.86 $ 0.28 $ 1.36
Earnings per share - diluted $ 0.29 $ 1.86 $ 0.28 $ 1.36