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Related Party Balances and Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Balances and Transactions (Details) [Line Items]
Aggregate net amounts of lease and maintenance expenses	$ 863	$ 912	$ 967
Revenues aggregated total amount			73
Administrative and IT services amount	30	49	32
Aggregate amounts	19		2
Salary expenses	112	108	108
Affiliates amount of related party	$ 67	$ 288
Revenues [Member]
Related Party Balances and Transactions (Details) [Line Items]
Revenues aggregated total amount			$ 16,296

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Amount of expense for administrative services provided to the limited liability company (LLC) or limited partnership (LP) by the managing member or general partner, affiliate of managing member or general partner, or affiliate of LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

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Costs of sales and operating expenses for the period incurred from transactions with related parties.

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Payments of cash to employees, including wages and salaries, during the current period.

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The cash inflow from a long-term borrowing made from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. Alternate caption: Proceeds from Advances from Affiliates.

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

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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.

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