Stock Based Compensation (Details) (USD $)
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3 Months Ended | 9 Months Ended | |||||||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Stock-based compensation [Line Items] | |||||||||
Stock-based compensation expense included in operating expense | $ 26,000 | $ 85,000 | $ 354,000 | $ 307,000 | |||||
Stock options [Member]
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Weighted Average fair Value Assumptions [Abstract] | |||||||||
Expected life | 5 years 6 months | [1] | |||||||
Risk free interest rate (in hundredths) | 0.60% | ||||||||
Expected volatility (in hundredths) | 96.00% | [2] | |||||||
Expected dividend yield (in hundredths) | 0.00% | ||||||||
Stock options granted (in shares) | 0 | 0 | 0 | 510,000 | |||||
Research and development [Member]
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Stock-based compensation [Line Items] | |||||||||
Stock-based compensation expense included in operating expense | 9,000 | 9,000 | 28,000 | 83,000 | |||||
Selling, general and administrative [Member]
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Stock-based compensation [Line Items] | |||||||||
Stock-based compensation expense included in operating expense | $ 17,000 | $ 76,000 | $ 326,000 | $ 224,000 | |||||
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