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Income Taxes (Details 3)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Schedule of reconciliation between statutory tax rate and effective tax rate      
Statutory federal rate 35.00% 35.00% 35.00%
State income taxes, net of federal benefits 4.20% 4.20% 4.60%
Other 0.30% 0.30% 0.20%
Effective tax rate 39.50% 39.50% 39.80%