Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2022

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The following table provides a reconciliation of benefit obligations, plan assets and the funded status of the pension plans and other postretirement benefits:

	Pension Benefits				Other Postretirement Benefits
	2022		2021		2022		2021
Change in benefit obligation:
Benefit obligation at January 1	$	(121,166)	$	(125,842)	$	(8,480)	$	(9,101)
Service cost	(414)		(415)		—		—
Interest cost	(2,628)		(2,284)		(233)		(224)
Plan amendment	—		—		—		(48)
Benefits paid	5,993		6,452		975		471
Expenses paid	264		291		—		—
Actuarial gain	14,375		632		1,455		422
Benefit obligation at December 31	$	(103,576)	$	(121,166)	$	(6,283)	$	(8,480)
Change in plan assets:
Fair value of plan assets at January 1	$	104,545	$	102,812	$	—	$	—
Actual return on plan assets	(14,331)		8,373		—		—
Expenses paid	(264)		(291)		—		—
Contributions	101		103		975		471
Benefits paid	(5,993)		(6,452)		(975)		(471)
Fair value of plan assets at December 31	$	84,058	$	104,545	$	—	$	—
Unfunded status at December 31	$	(19,518)	$	(16,621)	$	(6,283)	$	(8,480)
Amounts recognized in the consolidated balance sheets:
Prepaid pension costs	$	38,100	$	44,585	$	—	$	—
Other accrued liabilities	(89)		(95)		(596)		(621)
Non-current employee benefit liabilities	(57,529)		(61,111)		(5,687)		(7,859)
Net amounts recognized	$	(19,518)	$	(16,621)	$	(6,283)	$	(8,480)

Schedule of Net Benefit Costs

	Pension Benefits						Other Postretirement Benefits
	2022		2021		2020		2022		2021		2020
Service cost — benefits earned during the period	$	414	$	415	$	592	$	—	$	—	$	—
Interest cost on projected benefit obligation	2,628		2,284		3,545		233		224		286
Expected return on assets	(3,530)		(3,458)		(3,869)		—		—		—
Prior service cost	—		—		—		8		4		4
Settlement loss	—		—		1,805		—		—		—
Amortization of net loss (gain)	1,636		1,835		1,836		(31)		86		11
Net expense	$	1,148	$	1,076	$	3,909	$	210	$	314	$	301

Schedule of Amounts Recognized in Other Comprehensive Loss

As of December 31, 2022, accumulated other comprehensive loss, before income taxes, consisted of the following:

	Defined Benefit Pension Plans		Post- Retirement Plans		Total
Accumulated other comprehensive loss as of January 1, 2022	$	(20,817)	$	(644)	$	(21,461)
Amortization of prior service costs	—		8		8
Amortization of loss (gain)	1,636		(31)		1,605
Net (loss) gain arising during the year	(3,486)		1,455		(2,031)
Accumulated other comprehensive (loss) income as of December 31, 2022	$	(22,667)	$	788	$	(21,879)

As of December 31, 2021, accumulated other comprehensive loss, before income taxes, consisted of the following:

	Defined Benefit Pension Plans		Post- Retirement Plans		Total
Accumulated other comprehensive loss as of January 1, 2021	$	(28,199)	$	(1,106)	$	(29,305)
Amortization of prior service costs	—		4		4
Effect of settlement	—		(48)		(48)
Amortization of loss	1,835		86		1,921
Net gain arising during the year	5,547		420		5,967
Accumulated other comprehensive loss as of December 31, 2021	$	(20,817)	$	(644)	$	(21,461)

Schedule of Accumulated Benefit Obligations

As of December 31, 2022, our total accumulated benefit obligations, as well as our projected benefit obligations more than the fair value of the related plan assets, for defined benefit pension plans were as follows:

	December 31,
	2022		2021
Accumulated benefit obligation	$	57,618	$	61,206
Fair value of plan assets	$	—	$	—

	December 31,
	2022		2021
Projected benefit obligation	$	57,618	$	61,206
Fair value of plan assets	$	—	$	—

Schedule of Assumptions Used

The assumptions used for the pension benefits and other postretirement benefits were:

	Pension Benefits			Other Postretirement Benefits
	2022	2021	2020	2022	2021	2020
Weighted average assumptions:
Discount rates — benefit obligation	4.90% - 5.30%	1.80% - 2.70%	1.40% - 2.30%	5.40%	2.85%	2.55%
Discount rates — service cost	1.80% - 2.70%	1.40% - 2.30%	2.55% - 3.10%	2.85%	2.55%	3.30%
Assumed rates of return on invested assets	3.50%	3.50%	4.00 %	N/A	N/A	N/A
Salary increase assumptions	N/A	N/A	N/A	3.00%	3.00%	3.00%

Schedule of Allocation of Plan Assets

Vector’s defined benefit retirement plan allocations by asset category, were as follows:

	Plan Assets at December 31,
	2022		2021
Asset category:
Equity securities	34	%	38	%
Investment grade fixed income securities	66	%	62	%
High yield fixed income securities	—	%	—	%
Total	100	%	100	%

The defined benefit plans’ recurring financial assets subject to fair value measurements and the necessary disclosures were as follows:

	Fair Value Measurements as of December 31, 2022
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Insurance contracts	$	1,679	$	—	$	1,679	$	—
Amounts in individually managed investment accounts:
Cash, mutual funds and common stock	85		85		—		—
Common collective trusts at NAV (1)	82,294		—		—		—
Total	$	84,058	$	85	$	1,679	$	—
(1) In accordance with Subtopic 820-10, investments that are measured at fair value using the NAV practical expedient are not classified in the fair value hierarchy.

	Fair Value Measurements as of December 31, 2021
			Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
Description	Total		(Level 1)		(Level 2)		(Level 3)
Assets:
Insurance contracts	$	1,868	$	—	$	1,868	$	—
Amounts in individually managed investment accounts:
Cash, mutual funds and common stock	91		91		—		—
Common collective trusts at NAV (1)	102,586		—		—		—
Total	$	104,545	$	91	$	1,868	$	—
(1) In accordance with Subtopic 820-10, investments that are measured at fair value using the NAV practical expedient are not classified in the fair value hierarchy.

Schedule of Expected Benefit Payments

Estimated future pension and postretirement medical benefits payments were as follows:

	Pension		Postretirement Medical
2023	$	5,902	$	596
2024	5,576		598
2025	5,223		585
2026	4,891		564
2027	68,108		547
2028 - 2032	24,994		2,398