PENSIONS - Net Periodic Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Components of net periodic benefit cost:
Service cost	$ (75)	$ (120)	$ (155)
Interest cost	(1,087)	(879)	(1,271)
Expected return on plan assets	254	214	318
Recognized actuarial loss	(774)	(1,131)	(848)
Net periodic benefit cost	$ (1,682)	$ (1,916)	$ (1,956)

Amount of gain (loss), recognized immediately as component of net periodic benefit (cost) credit, for change in value of benefit obligation or plan assets from experience different from that assumed, change in actuarial assumption, or consequence of temporarily deviating from substantive plan. Includes, but is not limited to, amount in excess of 10 percent of greater of fair value of plan assets or benefit obligation.

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- Definition

Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

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- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

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No definition available.

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- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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