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MARKETABLE SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2015
Marketable Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation [Table Text Block] | The Group invests in marketable debt and equity securities, which are classified as available-for-sale. The following is a summary of marketable securities:
|  | December 31, |
|  | 2014 |  | 2015 |
|  | Amortized |  | Unrealized |  | Unrealized |  | Market |  | Amortized |  | Unrealized |  | Unrealized |  | Market |
|  | cost |  | losses |  | gains |  | value |  | cost |  | losses |  | gains |  | value |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  | $ | 11,916 |  | $ | (232) |  | $ | - |  | $ | 11,684 |  | $ | 11,666 |  | $ | (82) |  | $ | - |  | $ | 11,584 |
Equity funds |  |  | 116 |  |  | - |  |  | 115 |  |  | 231 |  |  | 118 |  |  | - |  |  | 117 |  |  | 235 |
Total available-for-sale marketable securities |  | $ | 12,032 |  | $ | (232) |  | $ | 115 |  | $ | 11,915 |  | $ | 11,784 |  | $ | (82) |  | $ | 117 |  | $ | 11,819 |
Investments Classified by Contractual Maturity Date [Table Text Block] | Marketable securities with contractual maturities from one to three years are as follows:
|  | Amortized |  | Unrealized gains (losses) |  | Market |
|  | cost |  | Gains |  | Losses |  | value |
Due between one to three years |  | $ | 9,201 |  | $ | - |  | $ | (44) |  | $ | 9,157 |
Marketable securities with contractual maturities from three to five years are as follows:
|  | Amortized |  | Unrealized gains (losses) |  | Market |
|  | cost |  | Gains |  | Losses |  | value |
Due between three to five years |  | $ | 2,465 |  | $ | - |  | $ | (38) |  | $ | 2,427 |
Schedule Of Changes In Other Comprehensive Income Of Available For Sale Securities [Table Text Block] | The following is the change in the other comprehensive income of available-for-sale securities during 2014:
|  | Other |
|  | comprehensive |
|  | income |
Other comprehensive income from available-for-sale securities as of January 1, 2014 |  | $ | 138 |
Unrealized loss from available-for-sale securities |  |  | (259) |
Other comprehensive loss from available-for-sale securities as of December 31, 2014 |  | $ | (121) |
The following is the change in the other comprehensive income of available-for-sale securities during 2015:
|  | Other |
|  | comprehensive |
|  | income |
Other comprehensive loss from available-for-sale securities as of January 1, 2015 |  | $ | (121) |
Unrealized gains from available-for-sale securities |  |  | 156 |
Other comprehensive income from available-for-sale securities as of December 31, 2015 |  | $ | 35 |

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