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Provision For Income Taxes (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Federal income tax expense computed at the statutory rate $ 1,427,534 $ 2,666,223 $ 3,000,457
Federal income tax expense computed at the statutory rate, percentage 34.00% 34.00% 34.00%
State and local tax expense, net $ 214,970 $ 744,974 $ 838,363
State and local tax expense, net, percentage 5.10% 9.50% 9.50%
U.S. domestic manufacturers' deduction & other permanent differences $ 463,646 $ (455,442) $ (427,525)
U.S. domestic manufacturers' deduction & other permanent differences, percentage 11.00% (5.80%) (4.90%)
Additions for tax positions of prior years $ 215,102    
Additions for tax positions of prior years, percentage 5.10% 0.00% 0.00%
Change in tax rates $ (138,008) $ 0 $ 0
Change in tax rates, percentage (3.20%) 0.00% 0.00%
Change in tax estimate $ 58,982 $ (88,880) $ (206,219)
Change in tax estimate, percentage 1.40% 1.10% 2.20%
Provision for income taxes $ 2,242,226 $ 2,866,875 $ 3,205,076
Provision for income taxes, percentage 53.40% 36.60% 36.40%