Employee Benefit Plans - Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	100.00%	100.00%	100.00%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 45,693	$ 89,972	$ 87,215
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	$ 932	149
Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	44,761	89,823
Cash.
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	932	149
Cash. | Level 1
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 932	$ 149
UK and international equities
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	27.00%	32.80%	31.40%
U.S.
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets		$ 17,423
U.S. | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets		17,423
International
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 11,399	11,909
International | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 11,399	$ 11,909
UK government and corporate bonds
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	5.50%	2.50%	2.70%
Corporate bonds / UK Gilts
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 2,529	$ 2,292
Corporate bonds / UK Gilts | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 2,529	$ 2,292
Diversified growth fund
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	18.50%	25.70%	21.00%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 8,417	$ 23,122
Diversified growth fund | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 8,417	$ 23,122
Multi Asset Credit Fund
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	4.70%	4.40%	4.30%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 2,158	$ 3,919
Multi Asset Credit Fund | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 2,158	$ 3,919
Liability Driven Investments
Defined Benefit Plan, Plan Assets, Allocations [Abstract]
Weighted average allocation of plan assets (as a percent)	44.30%	34.60%	40.60%
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 20,258	$ 31,158
Liability Driven Investments | Level 2
Defined Benefit Plan Pension Assets Fair Value By Category [Abstract]
Fair value of plan assets	$ 20,258	$ 31,158