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Employee Benefits - Plan Asset Fair Value Measurements (Details) - Level 1 - ICON Development Solutions Limited pension plan - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 27,320	$ 26,050
Government Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	21,312	22,887
Diversified Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 6,008	$ 3,163

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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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