Achieve Life Sciences, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Notes Tables
Notes Details

Fair Value Measurements - Additional Information (Detail)

v3.24.1.u1

Fair Value Measurements - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Maximum maturity period of cash and cash equivalents	90 days
Cash	$ 1,000
Cash equivalents	64,927
Custodian deposits	$ 55,900
Share Purchase Agreement [Member] \| Measurement Input, Probability of Success [Member] \| Level 3 [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input [Extensible Enumeration]	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Measurement Input	0.672
Share Purchase Agreement [Member] \| Measurement Input, Discount Rate [Member] \| Level 3 [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input [Extensible Enumeration]	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Measurement Input	0.38
Sweep Account [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Cash equivalents	$ 8,500
Maximum [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Maturity period of securities	1 year

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