Investments and other assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Other non-operating items, net		$ 17,490	$ 14,509	$ 6,823
MadHive Inc | Commercial Agreement | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Schedule of Equity Method Investments [Line Items]
Amortization period		2 years
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income
Schedule of Equity Method Investments [Line Items]
Other non-operating items, net		$ 20,800
Investment One
Schedule of Equity Method Investments [Line Items]
Equity investments, impairment loss			$ 2,500
Recorded gains				1,900
Different investment
Schedule of Equity Method Investments [Line Items]
Equity investments, impairment loss				$ 1,900
MadHive Inc
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of equity method investment	$ 26,400
After-tax gain on sale of equity method investment	$ 25,800	$ 25,800
Equity method investment, ownership percentage	19.00%