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ACCUMULATED OTHER COMPREHENSIVE LOSS (Reclassification out of AOCI) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Other (expense) income, net | $ (290) | $ 2,897 | $ (4,510)
Interest expense, net of interest income | 73,120 | 78,670 | 81,094
Unrealized (Losses) Gains on Available-for-Sale Securities |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Other (expense) income, net | 0 | (332) | 0
Unrealized Loss on Interest Rate Hedge |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Interest expense, net of interest income | $ (8,180) | $ (2,335) | $ (806)

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