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Shareholders' Equity (Narratives) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock compensation	$ 114,000	$ 93,000	$ 365,056	$ 274,852
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	115,252		115,252		63,777	61,642
DividendsCash			3,166,063	2,614,325
Dividends Payable, Amount Per Share	$ 0.543	$ 0.572	$ 0.543	$ 0.572
Preferred Stock Dividend Rate Percentage					6.30%
Dividends, Preferred Stock, Cash			$ 79,000

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Equity impact of cash dividends declared by an entity during the period for all classes of stock (common, preferred, etc.). This element includes paid and unpaid dividends declared during the period.

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The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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Equity impact of preferred stock cash dividends declared by an entity during the period. This element includes paid and unpaid dividends declared during the period.

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