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MARKETABLE SECURITIES (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Schedule of Available-for-sale Securities [Line Items]  
Available-for-sale Securities, Amortized Cost Basis $ 14,944
Available-for-sale Securities, Gross Unrealized Gain [1]
Available-for-sale Securities, Gross Unrealized Loss (6)
Available-for-sale Securities 14,938
Available For Sale Securities Within One Year [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Available-for-sale Securities, Amortized Cost Basis 13,291
Available-for-sale Securities, Gross Unrealized Gain [1]
Available-for-sale Securities, Gross Unrealized Loss (6)
Available-for-sale Securities 13,285
Available For Sale Securities Within One Year [Member] | Banks debentures [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Available-for-sale Securities, Amortized Cost Basis 6,358
Available-for-sale Securities, Gross Unrealized Gain [1]
Available-for-sale Securities, Gross Unrealized Loss 0
Available-for-sale Securities 6,358
Available For Sale Securities Within One Year [Member] | Corporate debentures [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Available-for-sale Securities, Amortized Cost Basis 6,933
Available-for-sale Securities, Gross Unrealized Gain [1]
Available-for-sale Securities, Gross Unrealized Loss (6)
Available-for-sale Securities 6,927
Available For Sale Securities After One Year Through Two Year [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Available-for-sale Securities, Amortized Cost Basis 1,653
Available-for-sale Securities, Gross Unrealized Gain 0
Available-for-sale Securities, Gross Unrealized Loss 0
Available-for-sale Securities 1,653
Available For Sale Securities After One Year Through Two Year [Member] | Banks debentures [Member]  
Schedule of Available-for-sale Securities [Line Items]  
Available-for-sale Securities, Amortized Cost Basis 1,653
Available-for-sale Securities, Gross Unrealized Gain 0
Available-for-sale Securities, Gross Unrealized Loss 0
Available-for-sale Securities $ 1,653
[1] Represents an amount less than $ 1.