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Provision For Income Taxes (Details 1) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Income Tax Disclosure [Abstract]        
Federal income tax expense computed at the statutory rate     $ 840,760 $ 2,150,925
Federal income tax expense computed at the statutory rate, percentage     34.00% 34.00%
State and local tax expense, net     330,586 766,896
State and local tax expense, net, percentage     13.40% 12.10%
U.S. domestic manufacturers' deduction & other permanent differences     (453,117) (361,150)
U.S. domestic manufacturers' deduction & other permanent differences, percentage     (18.30%) (5.70%)
Provision for income taxes $ 382,768 $ 1,145,478 $ 718,229 $ 2,556,671
Provision for income taxes, percentage     29.10% 40.40%