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Nature of business and future operations	6 Months Ended
	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of business and future operations	Nature of business and future operations Description of the Business Arbutus Biopharma Corporation (“Arbutus” or the “Company”) is a clinical-stage biopharmaceutical company leveraging its extensive virology expertise to develop novel therapeutics that target specific viral diseases. The Company’s current focus areas include hepatitis B virus (“HBV”), SARS-CoV-2 and other coronaviruses. To address HBV, the Company is developing an RNA interference (“RNAi”) therapeutic, imdusiran (AB-729), an oral PD-L1 inhibitor, AB-101, and an oral RNA destabilizer, AB-161, to potentially identify a combination regimen with the aim of providing a functional cure for patients with chronic HBV infection (“cHBV”) by suppressing viral replication, reducing surface antigen and reawakening the immune system. The Company believes its lead compound, imdusiran, is the only RNAi therapeutic with evidence of immune re-awakening. Imdusiran is currently being evaluated in multiple phase 2 clinical trials. In addition, a Phase 1 clinical trial with AB-161 was recently initiated. The Company also has an ongoing drug discovery and development program directed to identifying novel, orally active agents for treating coronaviruses, including SARS-CoV-2, where the Company has nominated a compound and has begun IND-enabling preclinical studies. In addition, the Company is also exploring oncology applications for its internal PD-L1 portfolio. Liquidity At June 30, 2023, the Company had an aggregate of $163.5 million in cash, cash equivalents and investments in marketable securities. The Company had no outstanding debt as of June 30, 2023. The Company believes it has sufficient cash resources to fund its operations for at least the next 12 months. The success of the Company is dependent on obtaining the necessary regulatory approvals to bring its products to market and achieve profitable operations. The Company’s research and development activities and the commercialization of its products are dependent on its ability to successfully complete these activities and to obtain adequate financing through a combination of financing activities and operations. It is not possible to predict either the outcome of the Company’s existing or future research and development programs or the Company’s ability to continue to fund these programs in the future.

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- Definition

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 275
-Publisher FASB
-URI https://asc.fasb.org//275/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-SubTopic 10
-Topic 275
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482861/275-10-50-1

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- References

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