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Significant Accounting Policies (Compensation expense related to stock options) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Significant Accounting Policies [Abstract]
Compensation expense	$ 38,167	$ 39,716	$ 113,631	$ 85,494
Income tax benefit	$ 11,935	$ 15,615	$ 40,333	$ 32,468

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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