XML 59 R35.htm IDEA: XBRL DOCUMENT
v3.22.2.2

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Class A Ordinary Shares Subject to Possible Redemption (Details) - Avista Public Acquisition Corp. II [Member] - USD ($) | 3 Months Ended | 8 Months Ended | 9 Months Ended | 11 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Dec. 31, 2021 | Dec. 31, 2021
Gross proceeds |  |  |  |  | $ 230,000,000 | $ 230,000,000
Proceeds allocated to Public Warrants |  |  |  |  | (9,813,334) | (9,813,334)
Issuance costs allocated to Class A ordinary shares |  |  |  |  | (13,029,901) | (13,029,901)
Remeasurement of Class A ordinary shares to redemption amount | $ 1,090,544 | $ 348,332 | $ 28,307,827 | $ 1,438,875 | 28,593,235 | 28,593,235
Class A ordinary shares subject to possible redemption | $ 237,188,875 |  |  | $ 237,188,875 | $ 235,750,000 | $ 235,750,000

X
- Definition Amount accretion of Class A ordinary shares subject to redemption to redemption value. + References No definition available. + Details
Name: | oabi_AccretionOfClassOrdinarySharesSubjectToRedemptionToRedemptionValue
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of issuance costs related to temporary equity. + References No definition available. + Details
Name: | oabi_TemporaryEquityIssuanceCosts
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gross proceeds allocated from temporary equity to warrants. + References No definition available. + Details
Name: | oabi_TemporaryEquityProceedsAllocatedToWarrants
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from issuance of callable preferred stock which is identified as being convertible to another type of financial security at the option of the issuer or the holder. + 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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfRedeemableConvertiblePreferredStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442526-122756 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -URI https://asc.fasb.org/extlink&oid=126975872&loc=SL124442552-122756 + Details
Name: | us-gaap_TemporaryEquityCarryingAmountAttributableToParent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=oabi_AvistaPublicAcquisitionCorp.IiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |