XML 55 R31.htm IDEA: XBRL DOCUMENT
v3.22.2.2

ORGANISATION AND NATURE OF OPERATIONS (Details) |  |  | 3 Months Ended | 9 Months Ended | 11 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 23, 2022 USD ($) $ / shares shares | Aug. 12, 2021 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) $ / shares shares | Sep. 30, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Nov. 01, 2022 USD ($) | Mar. 14, 2022 USD ($) $ / shares
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Cash |  |  |  |  |  | $ 95,800,000 |
Ligand | Avista Public Acquisition Corp. II [Member] | Separation And Distribution Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Percentage of common stock shares issued under distribution | 100 |  |  |  |  |  |
Common shares, par value (in dollars per share) | $ / shares | $ 0.001 |  |  |  |  |  |
Capital contributed, net of expenses | $ 15,000,000 |  |  |  |  |  |
Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Condition for future business combination, number of businesses, minimum |  |  |  | 1 | 1 |  |
Share issued price per unit | $ / shares |  | $ 10 |  |  |  |  |
Proceeds from sale of warrants |  | $ 12,350,000 |  |  |  |  |
Cash held outside of the Trust Account |  |  | $ 19,847 | $ 19,847 | $ 189,971 |  |
Gross proceeds |  | 230,000,000 |  |  |  |  |
Maturity term of U.S. government securities |  |  |  | 185 days | 185 days |  |
Months to complete initial business combination |  |  |  | 18 months | 18 months |  |
Obligation to redeem public shares if entity does not complete a business combination (as a percent) |  |  |  | 100.00% | 100.00% |  |
Threshold business days for redemption of public shares |  |  |  | 10 days | 10 days |  |
Maximum net interest to pay dissolution expenses |  |  |  | $ 100,000 | $ 100,000 |  |
Common shares, par value (in dollars per share) | $ / shares | $ 0.0001 |  |  |  |  |  |
Working capital deficit |  |  |  | 9,843,540 |  |  |
Maximum additional aggregate purchase price |  |  | 100,000,000 |  |  |  |
Amount deposited in an operating account for the working capital needs |  |  |  | $ 2,000,000 |  |  |
Number of additional financing public shares issued upon business combination | shares |  |  |  | 21,713,864 |  |  |
Offering costs |  | 13,662,256 |  |  | 13,662,256 |  |
Underwriting fees |  | 4,600,000 |  |  | 4,600,000 |  |
Deferred underwriting fee payable |  | 8,050,000 | $ 4,025,000 | $ 4,025,000 | 8,050,000 |  |
Other offering costs |  | $ 1,012,256 |  |  | $ 1,012,256 |  |
Threshold percentage of public shares subject to redemption without the company's prior written consent |  |  |  |  | 15.00% |  |
Working capital surplus |  |  |  |  | $ 496,302 |  |
Proceeds from the Initial Public offering and sale of the private placement warrants |  |  |  |  | $ 2,000,000 |  |
Avista Public Acquisition Corp. II [Member] | OmniAb |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Business combination shares voted |  |  | 0.0067% | 0.0067% |  |  |
Avista Public Acquisition Corp. II [Member] | Related Party Loans |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Price of warrant | $ / shares |  |  | $ 1.5 | $ 1.5 | $ 1.5 |  | $ 1.5
Maximum borrowing capacity of related party promissory note |  |  | $ 750,000 | $ 750,000 |  |  | $ 750,000
Outstanding balance of related party note |  |  | $ 750,000 | $ 750,000 |  |  |
Avista Public Acquisition Corp. II [Member] | Amended and Restated Forward Purchase Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of warrants issued | shares | 1,666,667 |  |  |  |  |  |
Warrant [Member] | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Gross proceeds |  |  |  |  | $ 100,000,000 |  |
Share price | $ / shares |  |  | $ 11.5 | $ 11.5 | $ 11.5 |  |
Private Placement Warrants | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Price of warrant | $ / shares |  | $ 1.5 |  |  |  |  |
Private Placement Warrants | Avista Public Acquisition Corp. II [Member] | Amended and Restated Forward Purchase Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Proceeds from sale of warrants | $ 15,000,000 |  |  |  |  |  |
IPO [Member] | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of units issued | shares |  | 23,000,000 |  |  | 15,900,000 |  |
Share issued price per unit | $ / shares |  |  |  |  | $ 10 |  |
Number of warrants issued | shares |  | 15,900,000 |  |  |  |  |
Share price | $ / shares |  |  | $ 10.25 | $ 10.25 | $ 10.25 |  |
Months to complete initial business combination |  |  |  | 18 months | 18 months |  |
Obligation to redeem public shares if entity does not complete a business combination (as a percent) |  |  |  | 100.00% | 100.00% |  |
Minimum net tangible assets upon consummation of the business combination |  |  | $ 5,000,001 | $ 5,000,001 | $ 5,000,001 |  |
IPO [Member] | Warrant [Member] | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of units issued | shares |  |  |  |  | 3,333,333 |  |
IPO [Member] | Private Placement Warrants | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of units issued | shares |  |  |  |  | 8,233,333 |  |
Number of warrants issued | shares |  | 8,233,333 |  |  |  |  |
Gross proceeds |  | $ 235,750,000 |  |  | $ 235,750,000 |  |
Share price | $ / shares |  | $ 10.25 |  |  | $ 10.25 |  |
Private Placement [Member] | Private Placement Warrants | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of warrants issued | shares |  | 8,233,333 |  |  | 8,233,333 |  |
Price of warrant | $ / shares |  | $ 1.5 |  |  | $ 1.5 |  |
Proceeds from sale of warrants |  | $ 12,350,000 |  |  | $ 12,350,000 |  |
Over-Allotment Option [Member] | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of units issued | shares |  | 3,000,000 |  |  |  |  |
Over-Allotment Option [Member] | Private Placement Warrants | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of warrants issued | shares |  | 900,000 |  |  |  |  |
Common Class A [Member] | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Common shares, par value (in dollars per share) | $ / shares |  |  | $ 0.0001 | $ 0.0001 | $ 0.0001 |  |
Common Class A [Member] | IPO [Member] | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of units issued | shares |  | 23,000,000 |  |  |  |  |
Share issued price per unit | $ / shares |  | $ 10 |  |  |  |  |
Number of shares issued | shares |  |  |  | 23,000,000 |  |  |
Proceeds from Issuance Initial Public Offering |  | $ 230,000,000 |  |  |  |  |
Common Class A [Member] | Over-Allotment Option [Member] | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of units issued | shares |  | 3,000,000 |  |  |  |  |
APAC Common Stock | OmniAb Inc | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of Class A common stock issued upon conversion of each share (in shares) | shares |  |  |  | 1 |  |  |
Number of shares in a unit | shares |  |  |  | 1 |  |  |
APAC Common Stock | OmniAb Inc | Avista Public Acquisition Corp. II [Member] | First Requirements |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Volume-weighted average price per share | $ / shares |  |  | 12.5 | $ 12.5 |  |  |
Number of days at volume-weighted average price to trigger vesting |  |  |  | 20 days |  |  |
Number of consecutive days volume-weighted average price to be within |  |  |  | 30 days |  |  |
APAC Common Stock | OmniAb Inc | Avista Public Acquisition Corp. II [Member] | Second Requirements |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Volume-weighted average price per share | $ / shares |  |  | $ 15 | $ 15 |  |  |
Number of days at volume-weighted average price to trigger vesting |  |  |  | 20 days |  |  |
Number of consecutive days volume-weighted average price to be within |  |  |  | 30 days |  |  |
APAC Common Stock | Warrant [Member] | OmniAb Inc | Avista Public Acquisition Corp. II [Member] |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of warrants in a unit | shares |  |  |  | 1 |  |  |
Earnout Stock | OmniAb Inc | Avista Public Acquisition Corp. II [Member] | First Requirements |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Percent of shares vested upon the combined company's achievement of the post-transaction volume-weighted average price |  |  |  | 50.00% |  |  |
Sponsor | OmniAb Inc | Avista Public Acquisition Corp. II [Member] | Amended and Restated Forward Purchase Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Additional aggregate purchase price |  |  |  | $ 100,000,000 |  |  |
Sponsor | Avista Public Acquisition Corp. II [Member] | Amended and Restated Forward Purchase Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of warrants issued | shares | 1,500,000 |  |  |  |  |  |
Gross proceeds | $ 15,000,000 |  |  |  |  |  |
Additional aggregate purchase price | $ 86,729,340 |  |  | $ 100,000,000 |  |  |
Sponsor purchased backstop | shares | 8,672,934 |  |  |  |  |  |
Shares backstop warrants | shares | 1,445,489 |  |  |  |  |  |
Maximum additional aggregate purchase price | $ 100,000,000 |  |  |  |  |  |
Sponsor | Warrant [Member] | Avista Public Acquisition Corp. II [Member] | Amended and Restated Forward Purchase Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of warrants issued | shares | 1,666,667 |  | 1,666,667 | 1,666,667 |  |  |
Additional number of warrants | shares | 1,666,667 |  |  |  |  |  |
Sponsor | APAC Common Stock | Avista Public Acquisition Corp. II [Member] | Amended and Restated Forward Purchase Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Number of units issued | shares | 1,500,000 |  |  |  |  |  |
Number of shares issued | shares |  |  |  | 1,500,000 |  |  |
Additional number of common stock | shares | 10,000,000 |  |  |  |  |  |
Sponsor | Earnout Stock | Avista Public Acquisition Corp. II [Member] | Sponsor Insider Agreement |  |  |  |  |  |  |
DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS, LIQUIDITY, AND GOING CONCERN CONSIDERATION |  |  |  |  |  |  |
Maximum number of shares subject to the price-based vesting conditions | shares |  |  | 1,916,667 | 1,916,667 |  |  |

X
- Definition The aggregate purchase price of the additional shares and additional warrants under an agreement. + References No definition available. + Details
Name: | oabi_AdditionalAggregatePurchasePrice
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of additional common stock to be purchased. + References No definition available. + Details
Name: | oabi_AdditionalNumberOfCommonStock
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the amount deposited in operating account for working capital purposes out of proceeds from the Initial Public Offering and sale of the Private Placement Warrants. + References No definition available. + Details
Name: | oabi_AmountDepositedInOperatingAccountForWorkingCapitalOutOfProceedsFromOfferings
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of capital, net of expenses. + References No definition available. + Details
Name: | oabi_CapitalContributedNetOfExpenses
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of additional 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 No definition available. + Details
Name: | oabi_ClassOfWarrantOrRightAdditionalNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Price per share or per unit of warrants or rights outstanding. + References No definition available. + Details
Name: | oabi_ClassOfWarrantOrRightPriceOfWarrantsOrRights
Namespace Prefix: | oabi_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The minimum number of businesses which the reporting entity must acquire with the net proceeds of the offering. + References No definition available. + Details
Name: | oabi_ConditionForFutureBusinessCombinationNumberOfBusinessesMinimum
Namespace Prefix: | oabi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying value as of balance sheet date of underwriting fees payable or deferred, classified as noncurrent. + References No definition available. + Details
Name: | oabi_DeferredOfferingCostsNoncurrent
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The maximum maturity term of investments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | oabi_InvestmentsMaximumMaturityTerm
Namespace Prefix: | oabi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum aggregate purchase price of the additional shares and additional warrants under an agreement in order to backstop shareholder redemptions for cash proceeds to be limited to the maximum. + References No definition available. + Details
Name: | oabi_MaximumAdditionalAggregatePurchasePrice
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of maximum borrowing capacity of related party promissory note. + References No definition available. + Details
Name: | oabi_MaximumBorrowingCapacityOfRelatedPartyPromissoryNote
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the maximum net interest to pay dissolution expenses. + References No definition available. + Details
Name: | oabi_MaximumNetInterestToPayDissolutionExpenses
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The maximum number of shares that could be subject to the price-based vesting conditions. + References No definition available. + Details
Name: | oabi_MaximumNumberOfSharesSubjectToPriceBasedVestingConditions
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the minimum net tangible assets upon consummation of the Business Combination. + References No definition available. + Details
Name: | oabi_MinimumNetTangibleAssetsUponConsummationOfBusinessCombination
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Duration of months to complete initial business combination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. + References No definition available. + Details
Name: | oabi_MonthsToCompleteInitialBusinessCombination
Namespace Prefix: | oabi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of additional financing public shares issued upon business combination. + References No definition available. + Details
Name: | oabi_NumberOfAdditionalFinancingPublicSharesIssuedUponBusinessCombination
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of consecutive trading days within a specified range when the reported volume-weighted average price must exceed the specified amount. + References No definition available. + Details
Name: | oabi_NumberOfDaysAtVolumeWeightedAveragePriceForSharesToVest
Namespace Prefix: | oabi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of shares in a unit. + References No definition available. + Details
Name: | oabi_NumberOfSharesIssuedPerUnit
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of warrants in a unit. + References No definition available. + Details
Name: | oabi_NumberOfWarrantsIssuedPerUnit
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of common stock shares issued under the distribution. + References No definition available. + Details
Name: | oabi_PercentageOfCommonStockSharesIssuedUnderDistribution
Namespace Prefix: | oabi_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of obligation to redeem public shares if Entity does not complete business combination. + References No definition available. + Details
Name: | oabi_PercentageOfObligationToRedeemPublicSharesIfEntityDoesNotCompleteBusinessCombination
Namespace Prefix: | oabi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Proceeds from the initial public offering and sale of the private placement warrants. + References No definition available. + Details
Name: | oabi_ProceedsFromInitialPublicOfferingAndSaleOfPrivatePlacementWarrants
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of other offering costs incurred. + References No definition available. + Details
Name: | oabi_SaleOfStockOtherOfferingCosts
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the amount of offering fees incurred and paid for underwriters. + References No definition available. + Details
Name: | oabi_SaleOfStockUnderwritingFees
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the Shares back shop warrants . + References No definition available. + Details
Name: | oabi_SharesBackstopWarrants
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of trading days over which the reported sale price is measured when determining the redemption price. + References No definition available. + Details
Name: | oabi_SharesToVestMeasurementPeriod
Namespace Prefix: | oabi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the Sponsor purchased backstop. + References No definition available. + Details
Name: | oabi_SponsorPurchaseBackstop
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the threshold business days for redemption of public shares. + References No definition available. + Details
Name: | oabi_ThresholdBusinessDaysForRedemptionOfPublicShares
Namespace Prefix: | oabi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Threshold percentage of public shares subject to redemption without the company's prior written consent. + References No definition available. + Details
Name: | oabi_ThresholdPercentageOfPublicSharesSubjectToRedemptionWithoutCompanysPriorWrittenConsent
Namespace Prefix: | oabi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of transaction costs incurred. + References No definition available. + Details
Name: | oabi_TransactionCosts
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of new units issued during the period. + References No definition available. + Details
Name: | oabi_UnitsIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | oabi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percent of shares that will vest upon the achievement of a post-transaction volume-weighted average price as determined by the company. + References No definition available. + Details
Name: | oabi_VestedPercentOfSharesUponAchievementOfPostTransactionVolumeWeightAveragePrice
Namespace Prefix: | oabi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Volume-weighted average price that would trigger the 50% of earnout shares vesting. + References No definition available. + Details
Name: | oabi_VolumeWeightedAveragePriceTriggerPrice
Namespace Prefix: | oabi_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of working capital deficit. + References No definition available. + Details
Name: | oabi_WorkingCapitalDeficit
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Working capital surplus. + References No definition available. + Details
Name: | oabi_WorkingCapitalSurplus
Namespace Prefix: | oabi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- 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. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=118262064&loc=SL116631418-115840 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 45 -Paragraph 21 -URI https://asc.fasb.org/extlink&oid=118262064&loc=SL116631419-115840 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_Cash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3044-108585 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of common stock. + 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 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
Name: | us-gaap_ConversionOfStockSharesIssued1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount for notes payable (written promise to pay), due to related parties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.17) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
Name: | us-gaap_NotesPayableRelatedPartiesCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. + 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_ProceedsFromIssuanceInitialPublicOffering
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt). + 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_ProceedsFromIssuanceOfWarrants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + 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_ProceedsFromIssuanceOrSaleOfEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + 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 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 3: 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 4: 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_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
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_SubsidiarySaleOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=oabi_LigandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=oabi_SeparationAndDistributionAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=oabi_RelatedPartyLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=oabi_AmendedAndRestatedForwardPurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=us-gaap_WarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=oabi_PrivatePlacementWarrantsMember
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_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | dei_LegalEntityAxis=oabi_OmniabIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oabi_VestingRequirementsAxis=oabi_FirstRequirementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | oabi_VestingRequirementsAxis=oabi_SecondRequirementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=oabi_SponsorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=oabi_SponsorInsiderAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |