Stockholders' equity - Narrative (Details)			1 Months Ended		3 Months Ended					12 Months Ended
	Jan. 01, 2025 shares	Aug. 06, 2022 USD ($)	Feb. 28, 2025 quarter shares	Feb. 29, 2024 quarter shares	Dec. 31, 2025 USD ($) grant $ / shares shares	Sep. 30, 2025 quarter shares	Mar. 31, 2025 quarter shares	Mar. 31, 2024 shares	Mar. 31, 2023 shares	Dec. 31, 2025 USD ($) period vote grant $ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Jul. 11, 2022 $ / shares shares	Oct. 29, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, shares authorized (in shares)					50,000,000					50,000,000	50,000,000
Preferred stock, par value (in dollars per share) | $ / shares					$ 0.00001					$ 0.00001	$ 0.00001
Preferred stock, shares issued (in shares)					0					0	0
Preferred stock, shares outstanding (in shares)					0					0	0
Number of votes per common stock | vote										1
Share repurchase program shares authorized (in shares) | $					$ 50,000,000					$ 50,000,000	$ 150,000,000
Repurchases of common stock (in shares)										7,971,500	16,205,119
Stock repurchased during period, value | $										$ 50,207,000	$ 151,201,000
Share-based payment arrangement, equity exchange participation rate (as percent)													0.97
Stock-based compensation in capitalized costs | $		$ 45,700,000								6,548,000	8,504,000	$ 9,175,000
Aggregate intrinsic value of options exercised in period | $										$ 1,600,000	$ 15,900,000	45,600,000
Vested & exercisable, awards outstanding (in shares)					50,000					50,000
Total shares of common stock reserved (in shares)					34,589,026					34,589,026	30,710,794
Stock-based compensation capitalized as a software | $										$ 6,300,000	$ 8,400,000	$ 9,000,000.0
Share-based Payment Arrangement, Option and Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, exercise price range, outstanding, weighted average exercise price (in dollars per share) | $ / shares													$ 11.13
RSUs Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, conversion basis													1
Share-based payment arrangement, shares exchanged (in shares)													6,958,544
Granted (in shares)										10,869,235
Granted (in dollars per share) | $ / shares										$ 6.88	$ 9.25	$ 9.86
Share-based compensation arrangement, equity instruments other than options, aggregate intrinsic value, vested | $										$ 51,300,000	$ 61,200,000	$ 68,400,000
Unrecognized compensation costs, excluding options | $					$ 104,100,000					$ 104,100,000
Unrecognized compensation costs, period for recognition (in years)										2 years 2 months 12 days
RSUs Outstanding | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)										2 years
RSUs Outstanding | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)										4 years
Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares right to receive (in shares)										1
Granted (in shares)			218,565	450,170		553,125		553,568	645,833	925,169
Award vesting schedule | quarter			12	12		6
Corporate performance metric attainment percentage			0.45	0.70	0.70					0.70
Granted (in dollars per share) | $ / shares										$ 7.37	$ 10.98	$ 8.89
Unrecognized compensation costs, excluding options | $					$ 2,900,000					$ 2,900,000
Unrecognized compensation costs, period for recognition (in years)										1 year 1 month 6 days
Share-based compensation arrangement, equity instruments other than options, vested in period, fair value | $										$ 1,200,000	$ 1,900,000
Contractual term (in years)										10 years
Number of grants | grant					1					1
Performance-Based Awards | Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage			25.00%		33.33%
Performance-Based Awards | Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage			75.00%	75.00%	66.67%
Performance-Based Awards | Q1 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)							372,044
Award vesting schedule | quarter							8
Corporate performance metric attainment percentage					0.66					0.66
Performance-Based Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage						0.00%	0.00%	0.00%	0.00%
Performance-Based Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage						150.00%	150.00%	150.00%	150.00%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)										4 years
Unrecognized stock-based compensation | $					$ 0					$ 0
Contractual term (in years)										10 years
Contingently issuable shares under ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs, excluding options | $					$ 4,200,000					$ 4,200,000
Unrecognized compensation costs, period for recognition (in years)										1 year 9 months 18 days
Total shares of common stock reserved (in shares)	1,474,842													2,800,000
Minimum annual increase in shares reserved for issuance (as percent)										1.00%
Percent of outstanding shares										300.00%
ESPP discount percentage from market price, beginning of purchase period										15.00%
Share-based compensation arrangement, consecutive offering period (in months)										24 months
Share-based compensation arrangement, number of purchase periods | period										4,000
Share-based compensation arrangement, purchase period (in months)										6 months
Share-based compensation arrangement, purchase price of common stock, percent										85.00%
Shares issued (in shares)										816,359
Incremental compensation cost | $										$ 2,400,000	$ 3,600,000	$ 5,900,000
Stock Appreciation Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)										4 years
Contractual term (in years)										10 years
Vested & exercisable, awards outstanding (in shares)					1,000					1,000
Vested & exercisable, weighted average exercise price (in dollars per share) | $ / shares					$ 3.12					$ 3.12
2021 Stock incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for future issuance (in shares)					13,800,000					13,800,000
Annual percentage increase										0.05
Number of shares reserved for future issuance increased (in shares)	7,374,214
Granted (in shares)										0	0	0
Vested & exercisable, awards outstanding (in shares)					890,908					890,908
Vested & exercisable, weighted average exercise price (in dollars per share) | $ / shares					$ 5.84					$ 5.84