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Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of consolidated Federal income tax return
Current city income tax provision	$ 406,814	$ 658,106	$ 514,076
Current state income tax provision	122,704	271,776	147,642
Current federal income tax provision	8,990,777	8,921,527	6,966,872
Deferred federal income tax benefit	(368,572)	(1,209,928)	(352,509)
Provision for income taxes	$ 9,151,723	$ 8,641,481	$ 7,276,081

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The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

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