BANK LOANS (Schedule of Long Term Bank Loan) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
long-term bank loans		$ 20,149
Less current maturities bank loans		(16,639)
Long term bank loans net of Current maturities		3,510
2019 [Member]
long-term bank loans		$ 15,919
2019 [Member] | Minimum [Member]
Effective interest rate		0.60%
2019 [Member] | Maximum [Member]
Effective interest rate		0.89%
2020 [Member]
long-term bank loans		$ 2,430
2020 [Member] | Minimum [Member]
Effective interest rate		0.68%
2020 [Member] | Maximum [Member]
Effective interest rate		0.75%
2018 - 2020 [Member]
long-term bank loans		$ 900
Effective interest rate	[1]	0.67%
2016 - 2021 [Member]
long-term bank loans		$ 900
Effective interest rate	[1]	0.69%

[1] The effective interest rate for the period from October 17, 2018 to December 31, 2018.