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Income Tax - Narrative (Details) (USD $)
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3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
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Sep. 30, 2013
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| Income Tax Disclosure [Abstract] | ||||
| Effective tax rate | (35.50%) | (3.80%) | (49.60%) | 28.70% |
| Income tax expense (benefit) | $ 1,214,000 | $ (89,000) | $ 4,915,000 | $ (1,678,000) |
| Discrete tax benefit related to dispositions on incentive stock options | (1,300,000) | |||
| Discrete tax benefit related to research and development | $ (1,100,000) | |||