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ACCUMULATED OTHER COMPREHENSIVE LOSS (Narrative) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Gains reclassified from AOCL | $ 11,392
Accumulated Net Investment Gain (Loss) Attributable to Parent | Other Income, net |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Gains reclassified from AOCL | 2,300
Accumulated Net Investment Gain (Loss) Attributable to Parent | Interest income |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Gains reclassified from AOCL | 7,400
Accumulated Net Investment Gain (Loss) Attributable to Parent | Interest Expense |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Gains reclassified from AOCL | $ 1,700

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