v3.25.1

Revenue from Contracts with Customers - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($) geographicalRegion
Revenue
Number of geographic regions \| geographicalRegion	3
Revenue recognized that was included in the balance sheet \| $	$ 34.2
Amortization period	7 years
Minimum
Revenue
The amount of time contract assets are transferred to receivables	2 years
Maximum
Revenue
The amount of time contract assets are transferred to receivables	5 years

The amount of time the contract assets are transferred to receivables when the right to billion normally occurs.

+ References

No definition available.

+ Details

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Namespace Prefix:	ospn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Geographic Regions

+ References

No definition available.

+ Details

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Namespace Prefix:	ospn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-SubTopic 40
-Topic 340
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479483/340-40-50-2

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

Reference 2: http://www.xbrl.org/2003/role/exampleRef
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-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479777/606-10-55-91

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Balance Type:	na
Period Type:	duration

- Details

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OneSpan Inc. 10-Q