FAIR VALUE - General (Details)	12 Months Ended
	Dec. 31, 2020 USD ($)
FAIR VALUE
Fair value, assets, level 1 to level 2 transfers, amount	$ 0
Fair value, assets, level 2 to level 1 transfers, amount	0
Fair value, liabilities, level 1 to level 2 transfers, amount	0
Fair value, liabilities, level 2 to level 1 transfers, amount	0
Transfer to level 3, assets, amount	0
Transfer from level 3, assets, amount	0
Transfer to level 3, liabilities, amount	$ 0