Description of the Company and Basis of Presentation	12 Months Ended
Description of the Company and Basis of Presentation	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Company and Basis of Presentation	Description of the Company and Basis of Presentation Description of the Company OneSpan provides security, identity, electronic signature (“e-signature”) and digital workflow solutions that protect and facilitate digital transactions and agreements. The Company delivers products and services that automate and secure customer-facing and revenue-generating business processes for use cases ranging from simple transactions to workflows that are complex or require higher levels of security. The Company’s solutions help its customers ensure the integrity of the people and records associated with digital agreements, transactions, and interactions in industries including banking, financial services, healthcare, and professional services. OneSpan has operations in Austria, Australia, Belgium, Canada, China, France, Japan, The Netherlands, Singapore, Switzerland, the United Arab Emirates, the United Kingdom (U.K.), and the United States (U.S.). Business Transformation In December 2021, the Company's Board of Directors approved a restructuring plan (the “restructuring plan”) designed to advance the Company's operating model, streamline its business, improve efficiency, and enhance its capital resources. The first phase of this restructuring plan began and was substantially completed during the three months ended March 31, 2022. In May 2022, the Company's Board of Directors approved additional actions related to the restructuring plan and the Company announced a three-year strategic transformation plan that began on January 1, 2023 (the "2022 strategic plan"). In conjunction with the 2022 strategic plan and to enable a more efficient capital deployment model, effective with the quarter ended June 30, 2022, the Company began reporting under the following two lines of business, which are its reportable operating segments: Digital Agreements and Security Solutions. As a result of the ongoing strategic transformation, the Company refined its operating segment allocation methodology to better align internal and external costs more directly to where the employee efforts and company resources are being spent on each segment. The Company applied this revised methodology on a prospective basis beginning in 2023. For further information regarding the Company’s reportable segments, see Note 3, Segment Information. Basis of Presentation The Company’s consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”). Certain amounts in prior periods have been reclassified to conform with current period presentation. Principles of Consolidation The consolidated financial statements include the accounts of OneSpan Inc. and its wholly owned subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The Company regularly assess these estimates, including but not limited to, stock-based compensation including the determination of the fair value of our stock-based awards, realization of deferred tax assets, pension obligations, estimated life of our long-lived assets, purchase price allocations for business combinations, valuation of the acquired intangibles purchased in a business combination, valuation of goodwill, estimated standalone selling price of our performance obligations, and estimated consideration for implementation services. Estimates are based on historical experience and on various other market-specific and relevant assumptions that the Company believes to be reasonable under the circumstances. Actual results could differ from those estimates. Foreign Currency Translation and Transactions The financial position and results of operations of the majority of the Company’s foreign subsidiaries are measured using the local currency as the functional currency. Accordingly, assets and liabilities are translated into U.S. dollars using current exchange rates as of the balance sheet date. Revenue and expenses are translated at average exchange rates prevailing during the year. Translation adjustments arising from differences in exchange rates are charged or credited to other comprehensive income (loss). Gains and losses resulting from foreign currency transactions are included in the consolidated statements of operations in other income (expense), net. Foreign exchange transaction losses aggregated $1.1 million, $1.9 million, and $0.8 million in 2023, 2022, and 2021, respectively.