XML 58 R46.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Shareholders’ Equity - Initial Public Offering and Impact of Corporate Reorganization (Details) |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 26, 2018 USD ($) $ / shares shares | Jun. 22, 2018 USD ($) shares | Dec. 31, 2018 USD ($) shares | Sep. 30, 2018 USD ($) shares | Sep. 30, 2017 USD ($) shares | Sep. 30, 2016 USD ($) | Jun. 22, 2018 GBP (£) shares | Dec. 31, 2017 USD ($)
Class of Stock |  |  |  |  |  |  |  |
Proceeds of issuance of ordinary shares, net of issuance costs |  |  | $ 0 | $ 156,920,000 | $ 127,686,000 | $ 32,222,000 |  |
Payment of stock issuance cost | $ 16,000,000 |  |  |  |  |  |  |
Equity conversion ratio |  | 3.185 |  |  |  |  |  |
Shares outstanding (shares) | shares |  |  | 129,073,591 | 129,074,156 | 29,962,742 |  |  |
Shares value |  |  |  |  |  |  |  | $ 1,000
Ordinary shares |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Shares outstanding (shares) | shares |  |  | 40,145,617 | 40,146,182 |  |  |  |
Shares value |  |  | $ 2,000 | $ 2,000 | $ 1,000 |  |  |
Ordinary shares | IPO |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Number of shares issued in transaction (shares) | shares | 10,147,059 |  |  |  |  |  |  |
Per share price of issuance (usd per share) | $ / shares | $ 17.00 |  |  |  |  |  |  |
Proceeds of issuance of ordinary shares, net of issuance costs | $ 156,500,000 |  |  |  |  |  |  |
Deferred Shares |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Shares outstanding (shares) | shares |  | 34,425 | 34,425 | 34,425 |  |  | 34,425 |
Shares value |  | $ 1.00 | $ 0 | $ 0 | 0 |  |  |
Deferred B shares |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Shares outstanding (shares) | shares |  | 88,893,548 | 88,893,548 | 88,893,548 |  |  | 88,893,548 |
Shares value |  | $ 118,000 | $ 118,000 | $ 118,000 | 0 |  |  |
Share capital registration threshold | £ |  |  |  |  |  |  | £ 50,000 |
Deferred C shares |  |  |  |  |  |  |  |
Class of Stock |  |  |  |  |  |  |  |
Shares outstanding (shares) | shares |  |  | 1 | 1 |  |  |  |
Shares value |  | $ 1.00 | $ 0 | $ 0 | $ 0 |  |  |

X
- Definition Equity Conversion Ratio + References No definition available. + Details
Name: | autl_EquityConversionRatio
Namespace Prefix: | autl_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share Capital Registration Threshold + References No definition available. + Details
Name: | autl_ShareCapitalRegistrationThreshold
Namespace Prefix: | autl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | us-gaap_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued which are neither cancelled nor held in the treasury. + References No definition available. + Details
Name: | us-gaap_SharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=autl_OrdinarySharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=autl_DeferredClassASharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=autl_DeferredClassBSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=autl_DeferredClassCSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |