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Employee Benefits - Funded Status (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
United Kingdom | ICON Development Solutions Limited pension plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ (19,558)	$ (41,813)
Fair value of plan assets	26,050	36,198	$ 34,612
Funded status	6,492	(5,615)
Switzerland | Aptiv Solutions pension plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	(5,806)	(7,643)
Fair value of plan assets	5,681	6,964	7,601
Funded status	(125)	(679)
Switzerland | PRA Switzerland AG pension plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	(5,345)	(4,990)
Fair value of plan assets	4,059	3,017	$ 2,849
Funded status	$ (1,286)	$ (1,973)

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

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