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Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

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Amount of lease cost recognized by lessee for lease contract.

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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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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Right-of-use asset and lease liabilities - Operating lease liabilities (Details) $ in Thousands		1 Months Ended	12 Months Ended
	Dec. 01, 2017 floor	Feb. 29, 2020 floor	Dec. 31, 2022 USD ($) $ / €	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Components of lease cost
Operating lease cost			$ 5,932	$ 5,306	$ 5,052
Variable lease cost			785	698	607
Sublease income			(849)	(907)	(904)
Total lease cost			5,868	5,097	4,755
Assets
Operating lease right-of-use assets			32,726	25,573
Current liabilities
Current operating lease liabilities			8,382	5,774
Non-current liabilities
Non-current operating lease liabilities			31,719	28,987
Total lease liabilities			40,101	34,761
Supplemental cash flow information related to leases
Cash paid for amounts included in the measurement of lease liabilities, Operating cash flows for operating leases			7,532	5,738	$ 5,769
Right-of-use asset obtained in exchange for lease obligation
Operating lease			9,824	1,699
Undiscounted Cash Flows
2023			8,382
2024			7,601
2025			7,956
2026			8,128
2027			8,308
Thereafter			17,002
Total lease payments			57,377
Less: amount of lease payments representing interest payments			(17,276)
Total lease liabilities			40,101	34,761
Less: current operating lease liabilities			(8,382)	(5,774)
Non-current operating lease liabilities			$ 31,719	$ 28,987
Exchange rate (in USD per Euro) \| $ / €			1.07
Lexington.
Current liabilities
Current operating lease liabilities			$ 5,236
Non-current liabilities
Non-current operating lease liabilities			22,333
Total lease liabilities			27,569
Undiscounted Cash Flows
2023			5,236
2024			5,504
2025			5,859
2026			6,031
2027			6,207
Thereafter			9,343
Total lease payments			38,180
Less: amount of lease payments representing interest payments			(10,611)
Total lease liabilities			27,569
Less: current operating lease liabilities			(5,236)
Non-current operating lease liabilities			22,333
Amsterdam
Components of lease cost
Number of floor of the facility \| floor	7
Number of floors to sub-lease \| floor	3
Number of floor to take back from the sub-lease \| floor		1
Current liabilities
Current operating lease liabilities			3,042
Non-current liabilities
Non-current operating lease liabilities			8,898
Total lease liabilities			11,940
Undiscounted Cash Flows
2023			3,042
2024			1,993
2025			1,993
2026			1,993
2027			1,997
Thereafter			7,190
Total lease payments			18,208
Less: amount of lease payments representing interest payments			(6,268)
Total lease liabilities			11,940
Less: current operating lease liabilities			(3,042)
Non-current operating lease liabilities			8,898
Other
Current liabilities
Current operating lease liabilities			104
Non-current liabilities
Non-current operating lease liabilities			488
Total lease liabilities			592
Undiscounted Cash Flows
2023			104
2024			104
2025			104
2026			104
2027			104
Thereafter			469
Total lease payments			989
Less: amount of lease payments representing interest payments			(397)
Total lease liabilities			592
Less: current operating lease liabilities			(104)
Non-current operating lease liabilities			$ 488