Additional Information to the Statements of Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Additional Information to the Statements of Comprehensive Loss [Abstract]
Revenues from lease	$ 13,218	$ 9,569	$ 6,654
Revenues from sale	9,883	6,828	4,491
Revenue total	$ 23,101	$ 16,397	$ 11,145

Expiry date 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in an increase in equity, other than those relating to contributions from equity participants. Effective 2020-01-01: The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details