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Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Dec. 31, 2023
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term		5 years 7 months 6 days
Weighted-average discount rate		6.00%
Cash payments to settle a lease liability reported in cash flows		$ 1,300
Right-of-use assets obtained in exchange for new lease liabilities		2,000
Contract termination fees		3,530	$ 5,015
Real Estate Rationalization
Lessee, Lease, Description [Line Items]
Contract termination fees		$ 1,183	1,885
Chicago Office | Real Estate Rationalization
Lessee, Lease, Description [Line Items]
Contract termination fees	$ 1,400
Gain on rent concession and tenant improvement allowances	$ 300		$ 300
Brussels Office
Lessee, Lease, Description [Line Items]
Term of contract		9 years

X

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Amount of gain (loss) on termination of lease before expiration of lease term.

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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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