Quarterly report pursuant to Section 13 or 15(d)

AVAILABLE-FOR-SALE SECURITIES - Additional Information (Details)

v3.21.2
AVAILABLE-FOR-SALE SECURITIES - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract]        
Average remaining maturity of available-for-sale securities     10 months 24 days  
Other-than-temporary impairment losses recognized on available-for-sale securities $ 0 $ 0 $ 0 $ 0