SIGNIFICANT ACCOUNTING POLICIES (Fair value measurement of assets and Liabilities) (Details) (USD $) - USD ($)
$ in Thousands |
Dec. 31, 2017 |
Dec. 31, 2016 |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Foreign currency derivative contracts, assets |
$ 23
|
|
| Foreign currency derivative contracts, liabilities |
|
$ (28)
|
| Total |
584
|
883
|
| Equity securities [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Marketables securities |
561
|
911
|
| Level 1 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Foreign currency derivative contracts, assets |
|
|
| Foreign currency derivative contracts, liabilities |
|
|
| Total |
561
|
911
|
| Level 1 [Member] | Equity securities [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Marketables securities |
561
|
911
|
| Level 2 [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Foreign currency derivative contracts, assets |
23
|
|
| Foreign currency derivative contracts, liabilities |
|
(28)
|
| Total |
23
|
(28)
|
| Level 2 [Member] | Equity securities [Member] |
|
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
|
|
| Marketables securities |
|
|