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INCOME TAX (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
INCOME TAXES          
Effective Income Tax Rate Reconciliation, Percent 98.00% 50.00% (54.00%) 113.00% (75.00%)