| INVESTMENT SECURITIES (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | |
| Investments, Debt and Equity Securities [Abstract] | |||
| Proceeds from the sales of available-for-sale securities | $ 0 | $ 1,800 | $ 5 | 
| Gross realized gain (loss) on sale of debt securities, available -for-sale | 300 | ||
| Investment securities - trading | 1,308 | 1,980 | |
| Trading securities, realized gain (loss) | $ (100) | $ 200 | $ 100 | 
| X | ||||||||||
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef 
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| X | ||||||||||
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- Definition Amount of restricted investment in debt security measured at fair value with change in fair value recognized in net income (trading). Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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| X | ||||||||||
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- References No definition available. 
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| X | ||||||||||
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- Definition The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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| X | ||||||||||
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- Definition Amount of gain (loss) realized from securities classified as trading. No definition available. 
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