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Stock-based compensation - Narrative (Details) - USD ($)				3 Months Ended				6 Months Ended
	Mar. 18, 2025	Mar. 08, 2024	Jan. 03, 2023	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Aggregate intrinsic value of exercisable service vesting-based stock options				$ 2,200,000				$ 2,200,000
Intrinsic value of service vesting-based awards exercised				$ 200,000				$ 200,000
Service based-vesting options granted (in shares)				0				0
Weighted average remaining contractual life (year)								10 months 24 days
Stock based compensation expense				$ 5,849,000			$ 3,971,000	$ 10,002,000	$ 8,099,000
Vesting period (year)								4 years
Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation costs for service vesting-based stock options				0				$ 0
Restricted Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation costs for service vesting-based stock options				23,600,000				23,600,000
Aggregate fair value of the service vesting-based awards granted				3,900,000				11,300,000
Aggregate fair value of the service vesting-based awards that vested				1,700,000				6,100,000
Stock based compensation expense				$ 2,800,000				$ 5,500,000
Period for recognition (year)								2 years 9 months 18 days
Granted (in shares)								466,150
Grant date fair value (in dollars per share)				$ 18.06		$ 16.00		$ 18.06
Performance Shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation costs for service vesting-based stock options				$ 1,800,000				$ 1,800,000
Service based-vesting options granted (in shares)				0				0
Stock based compensation expense				$ 900,000		$ 400,000		$ 1,300,000
Period for recognition (year)								6 months
Granted (in shares)		109,512
Grant date fair value (in dollars per share)		$ 17.36
Shares granted percentage					200.00%	100.00%
Incremental cost					$ 1,600,000
Performance Shares \| Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shareholder return attainment (percent)		0.00%
Performance Shares \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shareholder return attainment (percent)		200.00%
Market-based Restricted Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation costs for service vesting-based stock options				9,900,000				$ 9,900,000
Stock based compensation expense		$ 300,000	$ 1,600,000	$ 2,200,000			1,200,000	$ 3,200,000	2,500,000
Period for recognition (year)								1 year 3 months 18 days
Granted (in shares)								451,801
Grant date fair value (in dollars per share)				$ 33.02		$ 25.69		$ 33.02
Measurement date with a maturity period (year)								2 years
Dividend yield (percent)	0.00%	0.00%	0.00%					0.00%
Aggregate fair value of the market-based awards granted				$ 0			0	$ 6,300,000	6,300,000
Aggregate fair value of the market-based awards that vested				$ 0			$ 0	$ 11,500,000	$ 5,100,000
Market-based Restricted Stock \| Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shareholder return attainment (percent)	0.00%	0.00%	0.00%
Market-based Restricted Stock \| Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shareholder return attainment (percent)	200.00%	200.00%	200.00%