EMPLOYEE BENEFIT 401(k) PLANS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
EMPLOYEE BENEFIT 401(k) PLANS
Maximum deferral percentage	90.00%
Matching contribution (as a percent)	50.00%
Percent of compensation	6.00%
Employee contribution vesting percentage	100.00%
Years of service required to vest in employer contributions	2 years
Years of service required to vest 100% in employer contributions	6 years
Annual vesting percentage	20.00%
Total plan expense	$ 45,000	$ 45,000