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Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Income Taxes (Textual) [Abstract]
Statutory federal corporate tax rate	35.00%
Valuation allowance	$ 27.6	$ 28.4
Change in the total valuation allowance	0.8
Change in the valuation allowance included change in unrealized change in investments	$ 0.1

The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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- Definition

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.

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