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Stock-based compensation - Narrative (Details) - USD ($)				3 Months Ended			12 Months Ended
	Mar. 18, 2025	Mar. 08, 2024	Jan. 03, 2023	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Aggregate intrinsic value of exercisable service vesting-based stock options				$ 2,600,000
Intrinsic value of service vesting-based awards exercised				$ 0
Service based-vesting options granted (in shares)				0
Weighted average remaining contractual life (year)				1 year 2 months 12 days
Stock based compensation expense				$ 4,153,000		$ 4,128,000
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
Restricted Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation costs for service vesting-based stock options				22,500,000
Aggregate fair value of the service vesting-based awards granted				7,400,000
Aggregate fair value of the service vesting-based awards that vested				4,500,000
Stock based compensation expense				$ 2,700,000
Period for recognition (year)				2 years 9 months 18 days
Granted (in shares)				290,333
Grant date fair value (in dollars per share)				$ 17.53	$ 16.00		$ 16.00
Performance Shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation costs for service vesting-based stock options				$ 2,700,000
Service based-vesting options granted (in shares)				0
Stock based compensation expense				$ 400,000	$ 400,000
Period for recognition (year)				9 months 18 days
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				12,000,000.0
Stock based compensation expense				$ 1,000,000.0		1,100,000	$ 300,000	$ 1,600,000
Period for recognition (year)				1 year 6 months
Granted (in shares)				451,801
Grant date fair value (in dollars per share)				$ 33.02	$ 25.69		$ 25.69
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				$ 6,300,000		6,300,000
Aggregate fair value of the market-based awards that vested				$ 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%