Achieve Life Sciences, Inc. Annual report pursuant to Section 13 and 15(d)

Common Stock - Summary of Outstanding Warrants (Detail)

Common Stock - Summary of Outstanding Warrants (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Warrants Issued In September 2017 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	411
Exercise price per Share	$ 699.2000
Expiration Date	2023-03
Warrants Issued in June 2018 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	114,100
Exercise price per Share	$ 80.0000
Expiration Date	2023-06
Warrants Issued in October 2018 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	31,215
Exercise price per Share	$ 62.8900
Expiration Date	2023-10
Warrants Issued in May 2019 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	60,000
Exercise price per Share	$ 90.0000
Expiration Date	2025-05
Warrants Issued in December 2019 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	612,967
Exercise price per Share	$ 6.6000	$ 6.60
Expiration Date	2024-12
Warrants Issued in April 2020 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	182,461
Exercise price per Share	$ 7.2400
Expiration Date	2025-04
Warrants Issued in April 2020 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	24,375
Exercise price per Share	$ 7.3200
Expiration Date	2025-04
Warrants Issued in April 2020 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	25,270
Exercise price per Share	$ 7.5900
Expiration Date	2025-04
Pre-Funded Warrants Issued in August 2020 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	142,857
Exercise price per Share	$ 0.0010
Warrants Issued in December 2020 [Member]
Class of Warrant or Right [Line Items]
Total Outstanding and Exercisable	50,000
Exercise price per Share	$ 8.7500
Expiration Date	2025-12