Annual report pursuant to Section 13 and 15(d)

Concentrations (Details)

v2.4.1.9
Concentrations (Details)
12 Months Ended
Dec. 31, 2014
Customers
Dec. 31, 2013
Customers
Accounts Receivable [Member]    
Concentration Risk [Line Items]    
Number of customers 1drne_NumberOfCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
1drne_NumberOfCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
Percentage of concentrations of credit risk 100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
Revenues [Member]    
Concentration Risk [Line Items]    
Number of customers 4drne_NumberOfCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
8drne_NumberOfCustomers
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
Percentage of concentrations of credit risk 92.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
100.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember