Document and Entity Information - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Mar. 24, 2026 |
Jun. 30, 2025 |
|
| Document Information [Line Items] | |||
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Period End Date | Dec. 31, 2025 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Document Transition Report | false | ||
| Document Annual Report | true | ||
| Trading Symbol | ACHV | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Registrant Name | Achieve Life Sciences, Inc. | ||
| Entity Central Index Key | 0000949858 | ||
| Current Fiscal Year End Date | --12-31 | ||
| Entity Well-known Seasoned Issuer | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Filer Category | Non-accelerated Filer | ||
| Entity Shell Company | false | ||
| Entity Small Business | true | ||
| Entity Emerging Growth Company | false | ||
| Entity File Number | 033-80623 | ||
| Entity Tax Identification Number | 95-4343413 | ||
| Entity Address, Address Line One | 1040 West Georgia Street | ||
| Entity Address, Address Line Two | Suite 1030 | ||
| Entity Address, City or Town | Vancouver | ||
| Entity Address, State or Province | BC | ||
| Entity Address, Postal Zip Code | V6E 4H1 | ||
| City Area Code | 604 | ||
| Local Phone Number | 210-2217 | ||
| Entity Common Stock, Shares Outstanding | 53,239,988 | ||
| Entity Public Float | $ 103,958,994 | ||
| Title of 12(b) Security | Common Stock, par value $0.001 per share | ||
| Security Exchange Name | NASDAQ | ||
| ICFR Auditor Attestation Flag | false | ||
| Auditor Firm ID | 271 | ||
| Auditor Name | PricewaterhouseCoopers LLP | ||
| Auditor Location | Vancouver, Canada | ||
| Documents Incorporated by Reference | Portions of the Registrant’s Definitive Proxy Statement for its 2026 Annual Meeting of Stockholders, to be filed within 120 days of the Registrant’s fiscal year ended December 31, 2025, is incorporated by reference into Part III of this Annual Report on Form 10-K. |
||
| Document Financial Statement Error Correction [Flag] | false | ||
| Auditor Opinion | We have audited the accompanying consolidated balance sheets of Achieve Life Sciences, Inc. and its subsidiaries (the Company) as of December 31, 2025 and 2024, and the related consolidated statements of loss and comprehensive loss, of stockholders’ equity and of cash flows for each of the three years in the period ended December 31, 2025, including the related notes (collectively referred to as the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America. |
||
| Other Address | |||
| Document Information [Line Items] | |||
| Entity Address, Address Line One | 22722 29th Drive SE | ||
| Entity Address, Address Line Two | Suite 100 | ||
| Entity Address, City or Town | Bothell | ||
| Entity Address, State or Province | WA | ||
| Entity Address, Postal Zip Code | 98021 |