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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($)	12 Months Ended
EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Defined contribution plan, age of eligibility	21 years
Defined contribution plan, required service period prior to plan participation	60 days
Defined contribution plan, employer matching contribution (as a percent)	50.00%
Defined contribution plan, maximum annual contribution per employee (as a percent)	2.50%
Defined contribution plan, employer discretionary contribution amount	$ 921,000	$ 1,003,000	$ 1,034,000