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INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Tax Credit Carryforward [Line Items] |  |  |  |  |
Unrecognized tax benefits related to tax return which its statute of limitation may expire in March 2015 |  |  |  | $ (10,758) |
Net operating loss carryforwards |  | $ 26,000 |  |  |
Effective Statutory tax rate |  | 24.00% | 25.00% |  | 26.50%
Effect of tax rate reduction benefit due to net deferred tax liabilities |  | $ 12,970 |  |  |
Preferred income subject tax rate |  | 7.50% |  |  |
Minimum [Member] |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Effective Statutory tax rate |  | 21.00% |  |  |
Maximum [Member] |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Effective Statutory tax rate |  | 35.00% |  |  |
Subsequent Event [Member] |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Effective Statutory tax rate | 23.00% |  |  |  |
Tower [Member] |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Net operating loss carryforwards |  | $ 1,200 |  |  |
Effective Statutory tax rate |  | 20.00% |  |  |
Jazz [Member] |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Net operating loss carryforwards, annual utilization amount |  | $ 2,100 |  |  |
Tower US Holdings [Member] |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Net operating loss carryforwards |  | 107 |  |  |
Tower US Holdings [Member] | State and Local Jurisdiction [Member] |  |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |  |
Net operating loss carryforwards |  | $ 27 |  |  |

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