Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2023

Retirement Benefits [Abstract]

Summary of Reconciliation of Benefit Obligation, Plan Assets, and Funded Status

The following table provides a reconciliation of the benefit obligation, plan assets, and the funded status of the pension plans for U.S. and non-U.S. locations at the measurement dates.

	U.S. Pension Plans						Non-U.S. Pension Plan
	2023			2022			2023			2022
Accumulated benefit obligation	$	788		$	814		$	1,083		$	1,771
Change in projected benefit obligation:
Projected benefit obligation at January 1	$	814		$	1,008		$	2,146		$	2,335
Service cost		—			—			22			20
Interest cost		38			18			37			13
Benefits paid		(103	)		(103	)		(387	)		(238	)
Actuarial (gain) loss		39			(109	)		(394	)		239
Foreign exchange impact		—			—			(2	)		(223	)
Projected benefit obligation at December 31	$	788		$	814		$	1,422		$	2,146
Change in plan assets:
Assets at fair value at January 1	$	—		$	49,382		$	1,376		$	1,421
Actual return on assets		—			2,134			28			116
Company contributions		103			103			184			213
Benefits paid		(103	)		(103	)		(387	)		(238	)
Qualified replacement plan transfer		—			(17,500	)		—			—
Asset reversion		—			(34,016	)		—			—
Foreign exchange impact		—			—			(2	)		(136	)
Assets at fair value at December 31	$	—		$	—		$	1,199		$	1,376
Funded status (plan assets less projected benefit obligations)	$	(788	)	$	(814	)	$	(223	)	$	(770	)

The following table provides a reconciliation of the benefit obligation, plan assets, and the funded status of the post-retirement life insurance plan at those measurement dates.

	Post-Retirement Life Insurance Plan
	2023			2022
Accumulated benefit obligation	$	4,145		$	4,018
Change in projected benefit obligation:
Projected benefit obligation at January 1	$	4,018		$	5,231
Service cost		1			1
Interest cost		192			102
Benefits paid		(146	)		(147	)
Actuarial (gain) loss		80			(1,169	)
Projected benefit obligation at December 31	$	4,145		$	4,018
Change in plan assets:
Assets at fair value at January 1	$	—		$	—
Company contributions		146			147
Benefits paid		(146	)		(147	)
Other		—			—
Assets at fair value at December 31	$	—		$	—
Funded status (plan assets less projected benefit obligations)	$	(4,145	)	$	(4,018	)

Components of Accrued Cost

The components of the accrued cost of the domestic and foreign pension plans are classified in the following lines in the Consolidated Balance Sheets at December 31:

	U.S. Pension Plans						Non-U.S. Pension Plan
	2023			2022			2023			2022
Accrued expenses and other liabilities		(99	)		(99	)		—			—
Long-term pension obligations		(689	)		(715	)		(222	)		(770	)
Net accrued cost	$	(788	)	$	(814	)	$	(222	)	$	(770	)

The components of the accrued cost of the post-retirement life insurance plan are classified in the following lines in the Consolidated Balance Sheets at December 31:

	Post-Retirement Life Insurance Plan
	2023			2022
Accrued expenses and other liabilities	$	(478	)	$	(455	)
Long-term pension obligations		(3,667	)		(3,563	)
Total accrued cost	$	(4,145	)	$	(4,018	)

Summary of Accumulated Other Comprehensive income (loss)

We have also recorded the following amounts to accumulated other comprehensive income (loss) for the U.S. and non-U.S. pension plans, net of tax:

	U.S. Pension Plans			Non-U.S. Pension Plan
	Unrecognized Loss			Unrecognized Loss
Balance at January 1, 2022	$	312		$	1,803
Amortization of retirement benefits, net of tax		—			(155	)
Net actuarial (loss) gain		(108	)		132
Foreign exchange impact		—			(172	)
Balance at January 1, 2023	$	204		$	1,608
Amortization of retirement benefits, net of tax		—			(134	)
Net actuarial gain (loss)		13			(396	)
Foreign exchange impact		—			77
Balance at December 31, 2023	$	217		$	1,155

We have recorded the following amounts to accumulated other comprehensive income (loss) for the post-retirement life insurance plan, net of tax:

	Unrecognized Gain
Balance at January 1, 2022	$	(109	)
Amortization of retirement benefits, net of tax		—
Net actuarial loss		(900	)
Balance at January 1, 2023	$	(1,009	)
Amortization of retirement benefits, net of tax		259
Net actuarial gain		61
Balance at December 31, 2023	$	(689	)

Summary of Projected Benefit Obligation Accumulated Benefit Obligation and Fair Value of Plan Assets

The projected benefit obligation, accumulated benefit obligation and fair value of plan assets for those pension plans with accumulated benefit obligation in excess of the fair value of plan assets is shown below:

	As of December 31,
	2023		2022
Projected benefit obligation	$	2,210	$	2,961
Accumulated benefit obligation	$	1,871	$	2,585
Fair value of plan assets	$	1,199	$	1,377

Summary of Net Pension and Postretirement Expense

Net pension expense includes the following components:

	Years Ended December 31,									Years Ended December 31,
	U.S. Pension Plans									Non-U.S. Pension Plan
	2023			2022			2021			2023			2022			2021
Service cost	$	—		$	—		$	—		$	22		$	20		$	26
Interest cost		38			18			2,861			37			13			17
Expected return on plan assets(1)		—			(2,134	)		(474	)		(13	)		(9	)		(17	)
Amortization of unrecognized loss		22			30			3,703			172			167			184
Settlement charges		—			—			126,269			—			—			—
Net expense	$	60		$	(2,086	)	$	132,359		$	218		$	191		$	210
Weighted-average actuarial assumptions(2)
Benefit obligation assumptions:
Discount rate		4.83	%		5.04	%		2.46	%		1.63	%		1.75	%		0.63	%
Rate of compensation increase	N/A			N/A			N/A				3.00	%		5.00	%		3.00	%
Pension income/expense assumptions:
Discount rate		5.04	%		2.46	%		2.10	%		1.75	%		0.63	%		0.63	%
Expected return on plan assets(1)	N/A			N/A				1.44	%		1.75	%		0.63	%		0.63	%
Rate of compensation increase	N/A			N/A			N/A				5.00	%		5.00	%		3.00	%

(1)Expected return on plan assets is net of expected investment expenses and certain administrative expenses.

(2)During the fourth quarter of each year, we review our actuarial assumptions in light of current economic factors to determine if the assumptions need to be adjusted.

Net post-retirement expense includes the following components:

	Post-Retirement Life Insurance Plan
	Years Ended December 31,
	2023			2022			2021
Service cost	$	1		$	1		$	1
Interest cost		192			102			80
Amortization of unrecognized gain		(336	)		—			—
Net expense	$	(143	)	$	103		$	81
Weighted-average actuarial assumptions(1)
Benefit obligation assumptions:
Discount rate		4.90	%		5.11	%		2.66	%
Rate of compensation increase	N/A			N/A			N/A
Pension income/post-retirement expense assumptions:
Discount rate		5.11	%		2.66	%		2.27	%
Rate of compensation increase	N/A			N/A			N/A

(1)During the fourth quarter of each year, we review our actuarial assumptions in light of current economic factors to determine if the assumptions need to be adjusted.

Summary of Estimated Future Benefit Payments

Expected benefit payments under the Pension Plans and the postretirement benefit plan, for the five years subsequent to 2023 (i.e., 2024-2028, inclusive), and in the aggregate for the five years thereafter (i.e., 2029-2033, inclusive) are as follows:

	U.S. Pension Plan		Non-U.S. Pension Plan		Post- Retirement Life Insurance Plan
2024	$	99	$	50	$	478
2025		94		56		439
2026		90		61		406
2027		85		96		377
2028		80		64		351
2029-2033		219		444		1,467
Total	$	667	$	771	$	3,518

Summary of 401K and Other Plan Expense

Expenses related to defined contribution plans include the following:

	Years Ended December 31,
	2023		2022		2021
401(k) and other defined contribution plan expense	$	3,858	$	3,878	$	3,242