Stock-based compensation - Schedule of Share-Based Payment Award, Market-Based Awards Valuation Assumption (Details) - USD ($) $ in Thousands				3 Months Ended		9 Months Ended
	Mar. 18, 2025	Mar. 08, 2024	Jan. 03, 2023	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock based compensation expense				$ 5,895	$ 4,134	$ 15,897	$ 12,233
Market-based Restricted Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Target Shares (in shares)	250,252	239,464	268,738
Fair value	$ 9,800	$ 6,300	$ 6,800
Historical volatility (percent)	60.00%	80.00%	78.00%
Risk-free interest rate (percent)	4.10%	4.60%	4.40%
Dividend yield (percent)	0.00%	0.00%	0.00%			0.00%
Attainment (percent)			175.00%
Vested (in shares)			470,287			470,287
Stock based compensation expense		$ 300	$ 1,600	$ 2,200	$ 1,200	$ 5,400	$ 3,600
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%