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Income Taxes Income Taxes - Narrative (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Income Tax Disclosure [Abstract] | ||
| Increase (Decrease) in valuation allowance | $ 6,272,000 | $ (9,300,000) |
| Net operating loss carryforwards | 143,700,000 | |
| Operating Loss Carryforwards, Readily Available | $ 50,800,000 | |