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Income Taxes (Narrative) (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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| Income Taxes [Line Items] | ||
| Unrecognized tax benefits | ||
| Accrued interest and penalties related to uncertain tax positions | ||
| Open tax year | 2007 | |
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Research and Development [Member]
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| Income Taxes [Line Items] | ||
| Tax credit carryforwards, expiration | Dec. 31, 2031 | |
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Federal [Member]
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| Income Taxes [Line Items] | ||
| Net operating loss tax carryforwards | 34,300,000 | |
| Net operating loss tax carryforwards, expiration | Dec. 31, 2027 | |
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State [Member]
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| Income Taxes [Line Items] | ||
| Net operating loss tax carryforwards | $ 29,200,000 | |
| Net operating loss tax carryforwards, expiration | Dec. 31, 2017 |
| X | ||||||||||
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- Details
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- Definition
Tax year that remains open to examination under enacted tax laws, in CCYY format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Expiration date of each operating loss carryforward included in operating loss 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
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
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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