Revenue and contract costs - Schedule of Rollforward of Contract Assets and Contract Liabilities (Details) $ in Thousands	9 Months Ended
Oct. 31, 2025 USD ($)
Contract with Customer Asset [Roll Forward]
Balance, January 31, 2025	$ 4,743
Amount transferred to receivables from beginning balance of contract assets	(4,621)
Contract asset additions, net of reclassification to receivables	10,591
Balance, October 31, 2025	10,713
Contract with Customer Liability [Roll Forward]
Balance, January 31, 2025	32,877
Revenue recognized that was included in deferred revenue at the beginning of the period	(30,292)
Current period activity in deferred revenue	27,278
Balance, October 31, 2025	$ 29,863

Contract With Customer Asset

No definition available.

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- Definition

Contract With Customer, Liability, Other

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Contract With Customer Liability

+ References

No definition available.

+ Details

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Paragraph 8
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

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Period Type:	instant

- Definition

Amount of increase from purchase of right to consideration in exchange for good or service transferred to customer when right is conditioned on passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-11

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- Definition

Amount of decrease in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time from transfer to receivable due to right to consideration becoming unconditional.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
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+ Details

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-8

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