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Stock-based compensation - Narrative (Details) $ in Thousands		9 Months Ended
	Oct. 16, 2019 USD ($) shares	Feb. 23, 2025 USD ($) plan director tranche shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan		2
Unrecognized compensation expense \| $		$ 12,473
Weighted-average period		2 years 1 month 6 days
2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		1,547,216
Equity Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)		336,374
Nonemployee \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum recipient award amount \| $	$ 120
Stock options \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee (in shares)	500,000
Restricted stock units \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee (in shares)	250,000
Restricted stock units \| Equity Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of principal executive officers \| director		2
Restricted stock units \| Equity Inducement Plan \| Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		5 years
Restricted stock units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Restricted stock units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Stock appreciation rights \| 2019 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee (in shares)	500,000
Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period		5 years
Performance share units \| Equity Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| tranche		10
Performance period		5 years
Performance share units \| Equity Inducement Plan \| Tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage		50.00%
Performance share units \| Equity Inducement Plan \| Tranche two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Award vesting percentage		50.00%