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Income Taxes (Details Textual)	3 Months Ended		6 Months Ended
	Jun. 30, 2012 Rate	Jun. 30, 2011 Rate	Jun. 30, 2012	Jun. 30, 2012 Rate	Jun. 30, 2011	Jun. 30, 2011 Rate
Income Taxes (Textual) [Abstract]
Statutory federal income tax rate			35.00%	35.00%	35.00%	35.00%
Effective income tax rate	38.60%	30.60%	39.10%	39.10%	35.00%	35.00%
Additional in Federal income tax rate due to state income taxes			4.90%	4.90%	7.50%	7.50%
Additional in Federal income tax rate due to permanent differences between our U.S. GAAP income and taxable income			0.60%	0.60%	4.60%	4.60%
Reduction in federal income tax rate due to adjustment in our reserve for uncertain tax positions			1.40%	1.40%	12.10%	12.10%

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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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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The sum of the differences between the effective income tax rate and domestic federal statutory income tax rate attributable to all nondeductible expenses under enacted tax laws.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense or benefit, net of the federal tax benefit (expense) thereon, recorded during the period.

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