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Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2012
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Operating loss carryfoward, State
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| ValuationAllowanceLineItems | |
| Tax credit carryforward expiration | Dec. 31, 2015 |
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Operating loss carryfoward, Federal
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| ValuationAllowanceLineItems | |
| Tax credit carryforward expiration | Dec. 31, 2023 |
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Capital loss carryforward
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| ValuationAllowanceLineItems | |
| Valuation allowance | 3.0 |
| Change in deferred tax asset valuation allowance | (20.5) |
| Tax credit carryforward expiration | Dec. 31, 2015 |
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General business credit carryover
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| ValuationAllowanceLineItems | |
| Tax credit carryforward expiration | Dec. 31, 2027 |
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Charitable contribution carryforward
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| ValuationAllowanceLineItems | |
| Change in deferred tax asset valuation allowance | (32.7) |
| Tax credit carryforward expiration | Dec. 31, 2016 |
| X | ||||||||||
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- Definition
Expiration date of the tax credit carryforward, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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