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INCOME TAXES (Schedule of Reconciliation of Effective Income Tax Rate and Federal Statutory Rate) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Reconciliation of effective income tax rate and the federal statutory rate |  |  |
Federal tax (benefit) at statutory rate | $ 1,120 | $ 2,885 | $ 322
Stock compensation expense | 184 | 295 | 463
Effect of differences in foreign tax rates | 2,113 | (6,793) | 4,475
Summary of Interpretation No. 48 (“Fin 48”) Reserve | (1,230) | (1,478) | (2,465)
Change in deferred tax valuation allowance | (1,679) | 5,971 | (3,015)
Other | (886) | 383 | 1,008
Total Tax Expense (benefit) | $ (378) | $ 1,263 | $ 788

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