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Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies (Details) [Line Items]
Monthly deposits percentage rate	8.33%
Severance pay expense	$ 394	$ 346
Fair value of the options contracts	62	8
Profits (losses)	$ 81	$ 10	$ 0
Minimum [Member] | Short-Term Deposits [Member]
Significant Accounting Policies (Details) [Line Items]
Short-term deposit bearing interest percentage rate	0.40%
Minimum [Member] | Long-Term Deposits [Member]
Significant Accounting Policies (Details) [Line Items]
Long-term deposit bearing interest percentage rate	1.10%
Maximum [Member] | Short-Term Deposits [Member]
Significant Accounting Policies (Details) [Line Items]
Short-term deposit bearing interest percentage rate	1.21%
Maximum [Member] | Long-Term Deposits [Member]
Significant Accounting Policies (Details) [Line Items]
Long-term deposit bearing interest percentage rate	1.25%

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Monthly deposits percentage rate.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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