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

Income Tax - Additional Information (Detail)

v2.4.1.9

Income Tax - Additional Information (Detail) (USD $)	12 Months Ended
Income Tax - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Income tax rate assumed for both State and Foreign deferred tax calculations	34.00%	34.00%	34.00%	34.00%
Future enacted income tax rate assumed for both State and Foreign deferred tax calculations		34.00%	34.00%	34.00%
Net operating loss carryforwards	$ 151,112,000us-gaap_OperatingLossCarryforwards	$ 150,200,000us-gaap_OperatingLossCarryforwards
Unclaimed tax deductions	14,800,000
Starting range of research and development tax credits expiration period	2015
Ending range of research and development tax credits expiration period	2034
Deferred tax assets recognized	0us-gaap_DeferredTaxAssetsNet	0us-gaap_DeferredTaxAssetsNet
Unrecognized tax benefits	2,000,000
Accrued interest and penalties related to income taxes	0	0
Investment tax credits carryforwards [Member]
Income Taxes [Line Items]
Investment tax credits	4,448,000
Research [Member]
Income Taxes [Line Items]
Investment tax credits	2,000,000
CANADA \| Investment tax credits carryforwards [Member]
Income Taxes [Line Items]
Investment tax credits	2,400,000	2,200,000
CANADA \| Non Capital Loss Carryforwards [Member]
Income Taxes [Line Items]
Investment tax credits	$ 96,300,000	$ 80,900,000
Canada [Member]
Income Taxes [Line Items]
Income tax rate assumed for both State and Foreign deferred tax calculations		26.00%	25.75%	25.00%
Future enacted income tax rate assumed for both State and Foreign deferred tax calculations		26.00%	26.00%	25.00%

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Unclaimed tax deductions related to scientific research and experimental development expenditures.

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