SUPPLEMENTARY CONSOLIDATED BALANCE SHEET INFORMATION (Schedule of Long-Term Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Long-term loans:
Long-term loans	$ 4,000	$ 8,096
Less - current maturities	4,000	4,096
Long-term loans, excluding current maturities		$ 4,000
Loan from bank (a) [Member]
Long-term loans:
Interest rate	4.77%	4.77%
Maturity, maximum	Dec. 31, 2021	Dec. 31, 2021
Long-term loans	$ 4,000	$ 8,000
Loan from bank (b) [Member]
Long-term loans:
Variable interest reference rate	EURIBOR +2.75	EURIBOR +2.75
Interest rate, spread on variable rate	2.75%	2.75%
Maturity, maximum	Dec. 31, 2020	Dec. 31, 2020
Long-term loans		$ 96

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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- Definition

Latest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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- References

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- Definition

Carrying value as of the balance sheet date of portion of long-term loans payable due within one year or the operating cycle if longer.

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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