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Income Taxes (Details 2)	12 Months Ended
Income Taxes (Details 2)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Differences between federal statutory rate and effective tax rate
Statutory income tax rate	34.00%	34.00%	34.00%
State and foreign income taxes, net of federal benefit	1.00%	1.00%	1.00%
Change in valuation allowance	(69.00%)		23.00%
Foreign earnings taxed at different rate		(24.00%)
Change in estimated state income tax rate	(5.00%)	3.00%
Other permanent differences	12.00%	40.00%	8.00%
Effective tax rate	(27.00%)	54.00%	66.00%

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 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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- Definition

The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit that is attributable to changes in the income tax laws or rates.

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