Income Taxes (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 178.0us-gaap_OperatingLossCarryforwards
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	3.9
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	3.3
Tax Credit Carryforward, Amount	$ 2.5us-gaap_TaxCreditCarryforwardAmount

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 6

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-SubTopic 10

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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