EMPLOYEE BENEFIT PLANS - Changes in Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Projected benefit obligation:
Beginning of year	$ 100,244	$ 92,407
Service cost	0	0	$ 0
Interest cost	1,282	1,764	2,323
Actuarial (gain) loss	(4,237)	8,717
Benefits paid	(5,137)	(6,288)
Prior service cost	0	0
Disposal of Norwegian Plan	0	0
Foreign currency translation adjustment and other	(890)	3,644
End of year	91,262	100,244	92,407
Fair value of plan assets:
Beginning of year	94,962	83,086
Actual gain (loss) on plan assets	1,195	10,854
Employer contributions	4,118	3,851
Benefits paid	(5,137)	(6,288)
Foreign currency translation adjustment and other	(974)	3,459
End of year	94,164	94,962	$ 83,086
Excess projected obligation under (over) fair value of plan assets at end of year	2,902	(5,282)
Amounts recognized in accumulated other comprehensive loss:
Net actuarial loss	(4,624)	(7,347)
Prior service cost	(601)	(674)
Total	$ (5,225)	$ (8,021)