EMPLOYEE BENEFIT PLANS (Tables)

3 Months Ended

Mar. 31, 2021

Retirement Benefits [Abstract]

Schedule of Net Periodic Benefit Cost

Net periodic benefit costs for such retirement medical plans were as follows:

	Three Months Ended March 31,
	2021		2020
Service cost	$	22	$	17
Interest cost	6		6
Amortization of prior service cost	18		19
Amortization of gain	(6)		(13)
Net periodic benefit cost	$	40	$	29

Net periodic benefit costs for such benefit pension plans were as follows:

	Three Months Ended March 31,
	2021		2020
Service cost with interest to end of year	$	17	$	26
Interest cost	4		5
Expected return on plan assets	(9)		(4)
Amortization of gain	1		—
Total net periodic benefit cost	$	13	$	27