XML 47 R38.htm IDEA: XBRL DOCUMENT
v3.22.2

Acquisition of Quellis (Details) $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jan. 28, 2021 USD ($) shares | Mar. 31, 2021 shares | Jun. 30, 2022 | Jun. 02, 2021
Common stock |  |  |  |
Acquisition of Quellis |  |  |  |
Issuance of common stock upon acquisition of Quellis (in shares) |  | 555,444 |  |
Number of shares of common stock into which each share of Series X Preferred Stock may be converted |  |  | 166.67 | 166.67
Quellis Biosciences, Inc |  |  |  |
Acquisition of Quellis |  |  |  |
Cost to acquire the assets | $ | $ 170,681 |  |  |
Acquisition costs | $ | $ 1,800 |  |  |
Quellis Biosciences, Inc | Common stock |  |  |  |
Acquisition of Quellis |  |  |  |
Issuance of common stock upon acquisition of Quellis (in shares) | 555,444 |  |  |
Series X redeemable convertible preferred stock |  |  |  |
Acquisition of Quellis |  |  |  |
Issuance of preferred stock and common stock upon acquisition of Quellis (in shares) |  | 50,504 |  |
Number of shares of common stock into which each share of Series X Preferred Stock may be converted |  |  | 166.67 |
Series X redeemable convertible preferred stock | Quellis Biosciences, Inc |  |  |  |
Acquisition of Quellis |  |  |  |
Issuance of preferred stock and common stock upon acquisition of Quellis (in shares) | 50,504 |  |  |
Number of shares of common stock into which each share of Series X Preferred Stock may be converted | 166.67 |  |  |
Series X redeemable convertible preferred stock | Quellis Biosciences, Inc | Common stock |  |  |  |
Acquisition of Quellis |  |  |  |
Number of shares of common stock into which each share of Series X Preferred Stock may be converted | 166.67 |  |  |

X
- Definition Amount recognized as of the acquisition date for the identifiable assets acquired other than intangible assets in excess of (less than) the aggregate liabilities assumed other than deferred tax liabilities. + References No definition available. + Details
Name: | atxs_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherThanIntangibleAssetsAndDeferredTaxLiabilities
Namespace Prefix: | atxs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of new shares classified as temporary equity issued in an acquisition during the period. + References No definition available. + Details
Name: | atxs_TemporaryEquityStockIssuedInAcquisitionSharesNewIssues
Namespace Prefix: | atxs_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(7)(ii)) -URI https://asc.fasb.org/extlink&oid=126954596&loc=d3e511914-122862 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(3)(ii)(A)) -URI https://asc.fasb.org/extlink&oid=126954596&loc=d3e511914-122862 + Details
Name: | us-gaap_AcquisitionCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of common shares issuable upon conversion for each share of preferred stock to be converted. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
Name: | us-gaap_PreferredStockConvertibleConversionRatio
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of stock issued during the period pursuant to acquisitions. + 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 https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: 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(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesAcquisitions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=atxs_AgreementAndPlanOfMergerQuellisBiosciencesIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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