Annual report pursuant to Section 13 and 15(d) 12-31-2014

Income Taxes - Additional Information (Details)

v2.4.1.9
Income Taxes - Additional Information (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Line Items]    
Operating loss carry forwards, net $ 132,500,000us-gaap_OperatingLossCarryforwards $ 111,500,000us-gaap_OperatingLossCarryforwards
Interest or penalties 0us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense 0us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense
Tax valuation allowance increased $ 11,700,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount $ 3,800,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Minimum    
Income Tax Disclosure [Line Items]    
Operating loss carry forward expiration year 2023  
Maximum    
Income Tax Disclosure [Line Items]    
Operating loss carry forward expiration year 2034