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SHARE-BASED PAYMENTS (Details 4) - Subsidiaries Compensation Plans [Member] - Restricted Stock [Member] - shares | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Number of other equity instruments outstanding [Roll Forward] |  |
Beginning balance | 237,856 | 175,910
Granted | 129,218 | 138,282
Exercised | (41,801) | (15,811)
Not acquired due to breach of employment retention conditions | (15,563) | (60,525)
Ending balance | 309,710 | 237,856

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