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Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
Income Taxes (Details) (USD $)	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Investments, Owned, Federal Income Tax Note [Line Items]
Deferred tax assets	$ 2,963,000		$ 2,963,000		$ 2,888,000
Income tax expense (benefit)	$ 710,000	$ 1,727,000	$ 3,066,000	$ 4,389,000
Effective income tax rate			33.00%	36.00%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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