Shares issued from cashless exercise of warrants.

No definition available.

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Namespace Prefix:	appn_
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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Data Type:	num:perShareItemType
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Period Type:	instant

- 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.

+ References

No definition available.

+ Details

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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- Definition

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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Data Type:	na
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- Details

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Warrants - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Sep. 30, 2017	May 31, 2017
Class of Warrant or Right [Line Items]
Warrant exercise price (in dollars per share)	$ 0.88905
Warrant
Class of Warrant or Right [Line Items]
Fair value of warrant	$ 1.2
Series A Convertible Preferred Stock
Class of Warrant or Right [Line Items]
Warrant to purchase shares of preferred stock (in shares)	84,360
Class B Common Stock
Class of Warrant or Right [Line Items]
Shares issued on cashless exercise of warrants (in shares)		79,363
Class B Common Stock \| Prior to IPO
Class of Warrant or Right [Line Items]
Warrant to purchase shares of preferred stock (in shares)	84,360