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Related party balances and transactions (Details) - Schedule of related parties transactions - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Ochem [Member]
Related Party Transaction [Line Items]
Raw material purchased from Ochem			$ 30
Raw material sold to Ochem	167
Ochemate [Member]
Related Party Transaction [Line Items]
Raw material purchased from Ochemate			$ 2

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 470
-SubTopic 10
-Section S99
-Paragraph 1B
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-Publisher FASB
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