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Related Party Balances and Transactions (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Revenues	$ 34,050	$ 37,233	$ 29,510
Expenses:
Cost of revenues	8,866	10,488	8,982
Operating expenses:
Research and development, net	15,503	10,562	8,047
Sales and marketing, net	11,426	10,996	8,528
General and administrative	3,391	4,191	4,523
Related Party [Member]
Related Party Transaction [Line Items]
Revenues	16,369	24,559	18,461
Expenses:
Cost of revenues	163	201	210
Operating expenses:
Research and development, net	507	371	224
Sales and marketing, net	212	217	142
General and administrative	191	293	250
Capital expenses	$ 40	$ 9	$ 21

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The aggregate cost of goods produced and sold and services rendered during the reporting period.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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