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

Annual report pursuant to Section 13 and 15(d)

Common Stock - Issued and Outstanding Shares - Additional Information (Detail)

Common Stock - Issued and Outstanding Shares - Additional Information (Detail) - USD ($)									1 Months Ended	12 Months Ended
	May 27, 2021	Dec. 07, 2020	Aug. 06, 2020	Jul. 01, 2020	Apr. 28, 2020	Mar. 12, 2020	May 22, 2018	Sep. 14, 2017	Nov. 30, 2022	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Aug. 03, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, par value										$ 0.001	$ 0.001	$ 0.001
Common stock, shares issued										17,897,029	17,897,029	9,453,542
Proceeds from exercise of warrants										$ 24,000		$ 338,000	$ 3,231,000
Stock option exercises, Shares										0		0
Restricted stock unit settlements										26,625		231
Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued										3,584		5,114
Restricted stock unit settlements										26,625		145	128
November 2022 Private Placement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued					280,782
Warrants to purchase shares of common stock					0.75
Warrants to purchase shares of common stock, offering price per share					$ 6.60
Gross proceeds from issuance of common stock					$ 1,900,000
Proceeds from exercise of warrants					$ 1,600,000
Percentage of exercise price exceeds in measurement period					300.00%
Average daily trading volume for measurement period					$ 500,000
Number of required consecutive days weighted average trading price for cancelation or recall of warrants					30 days
November 2022 Private Placement [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued										8,186,282			280,782
November 2022 Private Placement [Member] \| Placement Agent [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price per unit of warrant					$ 7.59
Warrants to purchase common stock					25,270
July 2020 Registered Direct Offering [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Gross proceeds from issuance of common stock				$ 6,000,000.0
Placement agent fees and offering expenses				700,000
Proceeds from issuance of common stock				$ 5,300,000
July 2020 Registered Direct Offering [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued				731,707									731,707
Common stock, price per share				$ 8.20
August 2020 Public Offering [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Gross proceeds from issuance of common stock			$ 7,500,000
Proceeds from issuance of common stock			6,800,000										$ 6,822,000
Underwriting discounts and commissions and offering expenses			$ 700,000
August 2020 Public Offering [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued			569,043										569,043
Common stock, price per share														$ 10.50
Underwriters Over-Allotment Option Exercise [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued	428,571	322,500	92,856
December 2020 Public Offering [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Proceeds from issuance of common stock													$ 15,789,000
December 2020 Public Offering [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued		2,472,500											2,472,500
Common stock, price per share		$ 7.00
December 2019 Public Offering [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Offering expenses													$ 34,000
Gross proceeds from issuance of common stock		$ 17,300,000
Proceeds from issuance of common stock		15,800,000
Underwriting discounts and commissions and offering expenses		$ 1,500,000
December 2019 Public Offering [Member] \| Representative's Warrant [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Warrants to purchase common stock		50,000
Common stock, price per share		$ 8.75
Adjustments to additional paid in capital		$ 300,000
Warrant exercisable term		5 years
May 2021 Public Offering [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Gross proceeds from issuance of common stock	$ 23,000,000.0
Proceeds from issuance of common stock	21,300,000
Underwriting discounts and commissions and offering expenses	$ 1,700,000
May 2021 Public Offering [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued	3,285,714
Common stock, price per share	$ 7.00
At-the-Market Sales Agreement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares issued										200,000	200,000
Gross proceeds										$ 1,500,000	$ 1,500,000
Common stock aggregate maximum offering amount												$ 25,000,000
Common stock available for sale under offering										$ 23,500,000	$ 23,500,000
Subscription Agreements Executed on April 27, 2020 [Member] \| November 2022 Private Placement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price per unit of warrant					$ 7.24
Subscription Agreements Executed on April 28, 2020 [Member] \| November 2022 Private Placement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price per unit of warrant					$ 7.32
Subscription Agreement Executed in November 2022 [Member] \| November 2022 Private Placement [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price per unit of warrant									$ 4.50
Percentage of exercise price exceeds in measurement period									300.00%
Average daily trading volume for measurement period									$ 500,000
Number of required consecutive days weighted average trading price for cancelation or recall of warrants									30 days
Number of units issued in financing									4,093,141
Common stock, price per unit									$ 4.625
Description of stock units issued										each unit consisting of two shares of common stock and a common stock purchase warrant to purchase one share of common stock, or the November 2022 Warrants
Maximum beneficial ownership percentage of outstanding common stock for warrant holders									19.99%
Proceeds from financing									$ 17,900,000
Pre Funded Warrants \| August 2020 Public Offering [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Warrants to purchase common stock			142,857
Pre-funded warrant, offering price per share														10.499
Pre Funded Warrants \| August 2020 Public Offering [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price per unit of warrant														$ 0.001
Number of days of prior notice to achieve not in excess percentage of common stock shares owned by warrant holder			61 days
Pre Funded Warrants \| August 2020 Public Offering [Member] \| Common Stock [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of shares of common stock owned by warrant holder			9.99%
Pre Funded Warrants \| August 2020 Public Offering [Member] \| Common Stock [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of shares of common stock owned by warrant holder			19.99%
LPC [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock value right to sell, maximum						$ 11,000,000.0
Common stock, par value						$ 0.001
Minimum percentage of common stock shares outstanding authorized to sell							20.00%
Initial purchase of common stock								1,644
Common stock, shares issued								617
Payments related to expense reimbursement						$ 100,000
Common stock, shares issued								27,868		0
Gross proceeds								$ 4,400,000
Offering expenses								$ 500,000
Purchase agreement expired date								Mar. 14, 2022
LPC [Member] \| Purchase Agreement
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, purchase price								$ 1.00
Additional common stock value right to sell, maximum								$ 10,000,000.0
Additional purchase of common stock, maximum								7,500
Offering expenses													$ 14,000
LPC [Member] \| Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Initial purchase of common stock								1,644
Common stock, purchase price								$ 608
Purchase agreement, description										Unit consisting of (a) one share of our common stock and (b) one warrant to purchase one-quarter of a share of common stock at an exercise price of $699.20 per share, or LPC Warrant. Each LPC Warrant became exercisable six months following the issuance date until the date that is five years and six months after the issuance date and is subject to customary adjustments.
Exercise price per unit of warrant								$ 699.20
Initial purchase of units consisting of common stock and warrants issued								$ 1,000,000.0
LPC [Member] \| Other Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of warrants issued								0