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Restructuring charges - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2026	Mar. 31, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 2,307		$ 289	$ 2,368	$ 2,719
Third quarter 2024 restructuring
Restructuring Cost and Reserve [Line Items]
Expected percent of positions eliminated		25.00%
Severance Costs		$ 12,700
Restructuring Reserve [Roll Forward]
Restructuring liability Start of Period		4,000		4,000
Cash paid				0
Non-cash settlements				0
Restructuring liability End of Period	4,000			4,000
Restructuring charges		18,700
Third quarter 2024 restructuring \| Employee Severance and Pay Related Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability Start of Period		0		0
Cash paid				0
Non-cash settlements				0
Restructuring liability End of Period	0			0
Third quarter 2024 restructuring \| Other Restructuring [Member]
Restructuring Reserve [Roll Forward]
Cash paid				0
Non-cash settlements				0
Third quarter 2024 restructuring \| Contract Termination
Restructuring Reserve [Roll Forward]
Restructuring liability Start of Period		4,000		4,000
Restructuring liability End of Period	4,000			$ 4,000
Restructuring charges		6,000
Second quarter 2026 restructuring
Restructuring Cost and Reserve [Line Items]
Expected percent of positions eliminated				23.00%
Restructuring Reserve [Roll Forward]
Restructuring liability Start of Period		0		$ 0
Cash paid				(1,967)
Non-cash settlements				0
Restructuring liability End of Period	214			214
Restructuring charges				2,181
Second quarter 2026 restructuring \| 2026 Second Quarter
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	1,500			1,500
Second quarter 2026 restructuring \| Maximum [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	15,000			15,000
Second quarter 2026 restructuring \| Maximum [Member] \| 2026 Third Quarter
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	8,000			8,000
Second quarter 2026 restructuring \| Maximum [Member] \| 2026 Fourth Quarter
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	5,500			5,500
Second quarter 2026 restructuring \| Minimum [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	11,500			11,500
Second quarter 2026 restructuring \| Minimum [Member] \| 2026 Third Quarter
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	5,500			5,500
Second quarter 2026 restructuring \| Minimum [Member] \| 2026 Fourth Quarter
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	4,500			4,500
Second quarter 2026 restructuring \| Employee Severance and Pay Related Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability Start of Period		$ 0		0
Cash paid				(1,967)
Non-cash settlements				0
Restructuring liability End of Period	$ 214			$ 214