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INCOME TAXES - Unrecognized Tax Benefit Rollforward (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Gross unrecognized tax benefits, roll forward  
Balance at the beginning of the period $ 742
Additions for tax positions related to the current year 0
Additions for tax positions related to the prior years 0
Decreases related to settlement with taxing authority 0
Balance at the end of the period 742
Accrued interest and penalties related to unrecognized tax benefits $ 100