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Commitments and Contingent Liabilities (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Commitments And Contingent Liabilities (Textual)      
Lease expenses $ 354us-gaap_OperatingLeasesRentExpenseNet $ 405us-gaap_OperatingLeasesRentExpenseNet $ 420us-gaap_OperatingLeasesRentExpenseNet
Royalty expenses $ 3,700us-gaap_RoyaltyExpense    
Royalty commitments, Description The Company is required to pay royalties at the rate of 3.5% of sales of products developed with funds provided by the OCS, up to an amount equal to 100% of the research and development grants (dollar-linked) received from the OCS.