Achieve Life Sciences, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details 2)

Fair Value Measurements (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Cash [Member]
Summary of marketable securities
Amortized Cost	$ 3,690
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	3,690
Money market securities [Member]
Summary of marketable securities
Amortized Cost	10,152
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	10,152
Cash and cash equivalents [Member]
Summary of marketable securities
Amortized Cost	13,842
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	13,842
Money market securities [Member]
Summary of marketable securities
Amortized Cost	314
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	314
Restricted cash [Member]
Summary of marketable securities
Amortized Cost	314
Gross Unrealized Gain
Gross Unrealized Loss
Estimated Fair Value	314
Corporate bonds and commercial [Member]
Summary of marketable securities
Amortized Cost	83,829
Gross Unrealized Gain	3
Gross Unrealized Loss	(26)
Estimated Fair Value	83,806
Short-term investments [Member]
Summary of marketable securities
Amortized Cost	83,829
Gross Unrealized Gain	3
Gross Unrealized Loss	(26)
Estimated Fair Value	$ 83,806

- 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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

-Publisher FASB

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

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: 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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-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 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