Quarterly report pursuant to Section 13 or 15(d)

INTANGIBLE ASSETS - Additional Information (Details)

v3.21.2
INTANGIBLE ASSETS - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]          
Impairment on indefinite lived intangible assets       $ 0  
Total amortization expense $ 500,000 $ 700,000 $ 1,100,000 1,000,000.0  
Accumulated amortization $ 4,000,000.0   $ 4,000,000.0   $ 3,000,000.0
Impairment on finite lived intangible assets       0  
ACT          
Finite-Lived Intangible Assets [Line Items]          
Goodwill acquired       $ 6,000,000.0