Employee Benefit Plans - Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	100.00%	100.00%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 52,081	$ 45,694	$ 89,972
Minimum
Defined Benefit Plan Disclosure [Line Items]
Investment objective period to earn long-term expected rate of return	15 years
Maximum
Defined Benefit Plan Disclosure [Line Items]
Investment objective period to earn long-term expected rate of return	20 years
Level 1
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 941	932
Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	51,140	44,762
Cash.
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	941	932
Cash. | Level 1
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 941	$ 932
UK and international equities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	27.30%	27.00%
International
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 13,297	$ 11,400
International | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 13,297	$ 11,400
UK government and corporate bonds
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	5.10%	5.50%
Corporate bonds / UK Gilts
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 2,671	$ 2,529
Corporate bonds / UK Gilts | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 2,671	$ 2,529
Diversified growth fund
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	15.10%	18.50%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 7,846	$ 8,417
Diversified growth fund | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 7,846	$ 8,417
Multi Asset Credit Fund
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	1.60%	4.70%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 838	$ 2,158
Multi Asset Credit Fund | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 838	$ 2,158
Liability Driven Investments
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	50.90%	44.30%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 26,488	$ 20,258
Liability Driven Investments | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 26,488	$ 20,258