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

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Accounting Policies (Policies)
Notes Tables
Notes Details

Common Stock - Summary of Restricted Stock Unit Award Activity (Detail)

v2.4.1.9

Common Stock - Summary of Restricted Stock Unit Award Activity (Detail) (Restricted stock unit awards [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restricted stock unit awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Beginning Balance	356,589	172,085
Number of Shares, Granted	814,800	255,895	180,085
Number of Shares, Vested	(199,887)	(50,773)
Number of Shares, Forfeited or expired	(291,301)	(20,618)	(8,000)
Number of Shares, Ending Balance	680,201	356,589	172,085
Weighted-Average Grant Date Fair Value, Beginning Balance	$ 12.06	$ 13.01
Weighted-Average Grant Date Fair Value, Granted	$ 6.48	$ 11.64	$ 13.01
Weighted-Average Grant Date Fair Value, Vested	$ 7.00	$ 12.95
Weighted-Average Grant Date Fair Value, Forfeited or expired	$ 10.93	$ 12.51	$ 13.00
Weighted-Average Grant Date Fair Value, Ending Balance	$ 7.34	$ 12.06	$ 13.01

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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