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Provision For Income Taxes (Reconciliation Of The Provision For Income Taxes At Statutory Rate) (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Provision For Income Taxes [Abstract]        
Federal income tax expense computed at the statutory rate     $ 2,150,925 $ 1,689,676
Federal income tax expense computed at the statutory rate, percentage     34.00% 34.00%
State and local tax expense, net     766,896 413,001
State and local tax expense, percentage     12.10% 8.30%
U.S. domestic manufacturers' deduction & other permanent differences     (361,150) (277,157)
U.S. domestic manufacturers' deduction & other permanent differences, percentage     (5.70%) (5.60%)
Provision for income taxes, percentage     40.40% 36.70%
Provision for income taxes $ 1,145,478 $ 1,065,607 $ 2,556,671 $ 1,825,520