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Financing (Details 2) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Debt Conversion [Line Items]    
Debentures, Outstanding principal and accrued interest $ 40,248neom_DebtAndAccruedInterest  
Debentures, Principal and accrued interest converted since inception $ 12,577neom_DebtAndAccruedInterestConverted  
Hybrid financial instruments (in shares) 442,257,188us-gaap_DebtConversionConvertedInstrumentSharesIssued1 436,904,318us-gaap_DebtConversionConvertedInstrumentSharesIssued1
Common Stock [Member]    
Debt Conversion [Line Items]    
Hybrid financial instruments (in shares) 2,754,770us-gaap_DebtConversionConvertedInstrumentSharesIssued1
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember