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

Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details 1)

Fair Value Measurements (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Cash [Member]
Summary of marketable securities
Amortized Cost	$ 2,440	$ 5,725
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	2,440	5,725
Money market securities [Member]
Summary of marketable securities
Amortized Cost	15,635	20,786
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	15,635	20,786
Corporate bonds and commercial paper [Member]
Summary of marketable securities
Amortized Cost	57,312	36,414
Gross Unrealized Gain	4	7
Gross Unrealized Loss	(8)	(11)
Estimated Fair Value	57,308	36,410
Cash and cash equivalents [Member]
Summary of marketable securities
Amortized Cost	18,075	28,517
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	18,075	28,517
Money market securities [Member]
Summary of marketable securities
Amortized Cost	314	377
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	314	377
Restricted cash [Member]
Summary of marketable securities
Amortized Cost	314	377
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	314	377
U.S. Government securities [Member]
Summary of marketable securities
Amortized Cost
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value
U.S. agency securities [Member]
Summary of marketable securities
Amortized Cost
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value
Corporate bonds and commercial paper [Member]
Summary of marketable securities
Amortized Cost		2,006
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value		2,006
Short-term investments [Member]
Summary of marketable securities
Amortized Cost	57,312	36,414
Gross Unrealized Gain	4	7
Gross Unrealized Loss	(8)	(11)
Estimated Fair Value	$ 57,308	$ 36,410

- Definition

Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

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

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details