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Long term obligations (Details 1) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Software Licenses Obligations [1] $ 401 $ 759
Prepaid expenses and other current assets [Member]    
Debt Instrument [Line Items]    
Software Licenses Obligations 356  
Other assets [Member]    
Debt Instrument [Line Items]    
Software Licenses Obligations 713  
Property and equipment [Member]    
Debt Instrument [Line Items]    
Software Licenses Obligations $ 136  
[1] In March 2014, the Company renewed a vendor agreement to acquire certain additional software licenses and to receive support and subsequent software upgrades on these and other currently owned software licenses through February 2017. Pursuant to this agreement, the Company is obligated to pay approximately $0.4 million annually over the term of the agreement.