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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

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

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

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

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Income Taxes (Details) (USD $)	3 Months Ended
Income Taxes (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Deferred tax assets [Abstract]
Federal tax loss carry-forwards			$ 9,471,000
State tax loss carry-forward			21,780,000
(Provision) benefit for income taxes [Abstract]
(Provision) benefit for income taxes	0us-gaap_IncomeTaxExpenseBenefit	0us-gaap_IncomeTaxExpenseBenefit
Federal and State Authorities [Member]
Tax Credit Carryforward [Line Items]
Expiration date	Dec. 31, 2034
Research and development credit carryforwards [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward amount			1,285,000
Research and development credit carryforwards [Member] \| Minimum [Member]
Tax Credit Carryforward [Line Items]
Expiration date	Dec. 31, 2020
Research and development credit carryforwards [Member] \| Maximum [Member]
Tax Credit Carryforward [Line Items]
Expiration date	Dec. 31, 2034
Foreign tax credit carryforwards [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward amount			359,000
Foreign tax credit carryforwards [Member] \| Minimum [Member]
Tax Credit Carryforward [Line Items]
Expiration date	Dec. 31, 2018
Foreign tax credit carryforwards [Member] \| Maximum [Member]
Tax Credit Carryforward [Line Items]
Expiration date	Dec. 31, 2020
Alternative minimum tax credit carry forwards [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforward amount			$ 111,000