Achieve Life Sciences, Inc. Registration of securities issued in business combination transactions

Registration of securities issued in business combination transactions

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Fair Value Measurements - Summary of Cash, Cash Equivalents and Short-Term Investments (Detail)

v3.7.0.1

Fair Value Measurements - Summary of Cash, Cash Equivalents and Short-Term Investments (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash, amortized cost and estimated fair value	$ 2,728	$ 1,800		$ 14,034
Cash and cash equivalents, amortized cost and estimated fair value	15,690	15,233	$ 18,913	34,310	$ 27,897	$ 14,593
Restricted cash, amortized cost and estimated fair value	272	272		272
Amortized Cost	760	10,231		20,885
Gross Unrealized Gains		0		0
Gross Unrealized Losses		(1)		(9)
Estimated Fair Value	760	10,230		20,876
Money market securities (cash equivalents) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Restricted cash, amortized cost and estimated fair value				272
Cash equivalents, amortized cost and estimated fair value	12,962	11,931		20,276
Restricted cash, amortized cost and estimated fair value	272	272
Corporate bonds and commercial paper (cash equivalents) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents, amortized cost and estimated fair value		1,502
Corporate bonds and commercial paper (short term investments) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized Cost	760	8,231		20,885
Gross Unrealized Gains		0		0
Gross Unrealized Losses		(1)		(9)
Estimated Fair Value	$ 760	8,230		$ 20,876
Government securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amortized Cost		2,000
Gross Unrealized Gains		0
Estimated Fair Value		$ 2,000

- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale.

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- Definition

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 320
-SubTopic 10
-Section 50
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Amount of investments in debt securities classified as available-for-sale, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations.

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- Definition

Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements.

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