Balances and Transactions with Related Parties (Details 1) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Transactions with related parties:
Management fees to DBSI (see Note 5e)	$ 45	$ 45	$ 90	$ 90	$ 180
Sales to related parties	23	13	45	39	254
Purchases from related parties	$ 212	$ 247	$ 441	$ 504	$ 682

Amount of transactions with related party during the financial reporting period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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