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INCOME TAXES INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Uncertain tax position liability at the beginning of the year $ 400 $ 445 $ 106
Increases related to tax positions taken during prior period 0 21 953
Decreases related to tax positions taken during prior periods (400) 0 0
Decreases related to settlements with taxing authorities 0 (66) (614)
Uncertain tax position liability at the end of the year $ 0 $ 400 $ 445