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INCOME TAXES - Reconciliation of income tax (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Effective Income Tax Rate Reconciliation, Percent [Abstract]    
Statutory rate 21.00% 21.00%
State taxes 3.00% 3.00%
Permanent differences and other 1.00%  
Change in valuation allowance   (1.00%)
Stock based compensation (15.00%) (4.00%)
Other (true - up)   1.00%
Effective rate 10.00% 20.00%