Stock-based compensation - Narrative (Details) $ / shares in Units, $ in Thousands						3 Months Ended	12 Months Ended
	Mar. 08, 2024 USD ($) peer $ / shares shares	Oct. 19, 2023 USD ($) shares	Jan. 03, 2023 USD ($) peer shares	Feb. 24, 2022 USD ($) peer shares	Feb. 08, 2021 shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Jul. 21, 2023 shares	Jun. 30, 2022 shares	Jun. 30, 2021 shares	Jul. 31, 2020 shares	May 31, 2017 shares	Dec. 31, 2013 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period (in years)							4 years
Weighted Average Remaining Contractual Life							1 year 5 months 12 days
Share-based payment arrangement, expense | $							$ 16,514	$ 23,249	$ 17,726
Number of peers | peer	20		20	20
Service vesting-based restricted stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unvested restricted stock awards (in shares)						1,295,640	1,295,640	2,312,898	1,879,215
Aggregate fair value of the service vesting-based awards granted | $							$ 10,000	$ 25,000	$ 34,700
Aggregate fair value of the service vesting-based awards that vested | $							$ 27,700	$ 20,500	12,600
Grants in period (in shares)							484,886	1,907,101
Share-based payment arrangement, expense | $							$ 10,800	$ 15,700	$ 13,600
Unrecognized compensation costs for service vesting-based stock options | $						$ 18,000	$ 18,000
Period for recognition							2 years 7 months 6 days
Grant date fair value (in dollars per share) | $ / shares						$ 16.00	$ 16.00	$ 18.32	$ 28.94
Vesting to current employees (in shares)							1,323,729	1,237,221
Service vesting-based restricted stock | Executive Officer | Share-Based Payment Arrangement, Tranche One
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting percentage									25.00%
Service vesting-based restricted stock | Executive Officer | Share-Based Payment Arrangement, Tranche Two
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting percentage									25.00%
Service vesting-based restricted stock | Executive Officer | Share-Based Payment Arrangement, Tranche Three
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting percentage									25.00%
Service vesting-based restricted stock | Executive Officer | Share-Based Payment Arrangement, Tranche Four
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Award vesting percentage									25.00%
Service vesting-based stock options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options, outstanding (in shares)						127,000	127,000	217,250	456,293
Aggregate intrinsic value of outstanding service vesting-based stock options | $						$ 3,000	$ 3,000
Aggregate intrinsic value of exercisable service vesting-based stock options | $						$ 3,000	3,000
Intrinsic value of service vesting-based awards exercised | $							$ 1,800	$ 3,900	$ 4,100
Service based-vesting options granted (in shares)							0	0	0
Weighted Average Remaining Contractual Life							1 year 4 months 24 days
Market-based restricted stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unvested restricted stock awards (in shares)		150,155				495,686	495,686	509,166	271,044
Grants in period (in shares)	300,529		30,616				312,081	268,738
Share-based payment arrangement, expense | $		$ 1,700					$ 4,500	$ 6,500	$ 4,300
Unrecognized compensation costs for service vesting-based stock options | $						$ 3,300	$ 3,300
Period for recognition							1 year
Total shareholder return attainment	125.00%		100.00%
Grant date fair value (in dollars per share) | $ / shares						$ 25.69	$ 25.69	$ 26.50	$ 30.64
Performance-based awards granted | $							$ 6,300	$ 6,500	$ 6,700
Vesting to current employees (in shares)							325,561	30,616
Historical volatility	80.00%		78.00%
Dividend yield	0.00%		0.00%	0.00%
Risk-free interest rate	4.60%		4.40%
Measurement date with a maturity period	2 years		2 years	2 years
Aggregate fair value of the performance-based awards | $							$ 5,700	$ 700	$ 5,000
Market-based restricted stock | Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shareholder return attainment	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	200.00%		200.00%	200.00%
Market-based restricted stock | Executive Officer
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Aggregate fair value of the service vesting-based awards granted | $			$ 1,300
Grants in period (in shares)	239,464		268,738	240,428	30,616
Share-based payment arrangement, expense | $	$ 6,300		$ 6,800	$ 6,700
Market-based restricted stock | Michael Rice | Executive Officer
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Grants in period (in shares)			99,038	70,094
Performance-based stock options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Service based-vesting options granted (in shares)								0	0
Grants in period (in shares)	109,512
Share-based payment arrangement, expense | $						$ 400	1,200
Unrecognized compensation costs for service vesting-based stock options | $						$ 1,500	$ 1,500
Period for recognition							1 year
Grant date fair value (in dollars per share) | $ / shares	$ 17.36
Shares granted percentage						100.00%
Performance-based awards granted | $							$ 1,900
Vesting to current employees (in shares)							0
Performance-based stock options | Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shareholder return attainment	0.00%
Performance-based stock options | Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total shareholder return attainment	200.00%
Market-based Restricted Stock Second Issuance
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Historical volatility			68.00%	63.00%
Dividend yield			0.00%	0.00%
Risk-free interest rate			0.10%	1.50%
The 2013 Performance Incentive Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)											8,500,000	6,500,000	5,000,000	4,100,000	3,100,000
Options, outstanding (in shares)						127,000	127,000
Unvested restricted stock awards (in shares)						500,000	500,000
The 2023 Performance Incentive Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance (in shares)										4,200,000
The 2023 Performance Incentive Plan | Service vesting-based restricted stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unvested restricted stock awards (in shares)						1,400,000	1,400,000