The number of earn-out shares in first milestone after rounding off.

No definition available.

Name:	obio_EarnOutSharesFirstMilestoneRoundedOff
Namespace Prefix:	obio_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares earnout first milestone.

+ References

No definition available.

+ Details

Name:	obio_EarnoutFirstMilestone
Namespace Prefix:	obio_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

Name:	obio_SharesConsideration
Namespace Prefix:	obio_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

+ Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Number of additional shares included in diluted EPS for potentially dilutive effect of nonvested equity-based payment award containing forfeitable rights to dividends or dividend equivalents, whether paid or unpaid.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-22

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 23
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-23

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-28A

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 68B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482689/260-10-45-68B

+ Details

Name:	us-gaap_IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=us-gaap_RestrictedStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=us-gaap_ConvertibleDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=obio_ForfeitableSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=obio_EarnoutConsiderationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Net Loss Per Share - Schedule of calculation of diluted net loss per share (Details) - shares			3 Months Ended
	Apr. 12, 2023	Jan. 26, 2023	Mar. 31, 2024	Mar. 31, 2023
Anti-dilutive Securities
Earnout first milestone	4,000,000
Earnout first milestone Round off	3,999,987
Forfeitable shares	500,000
Antidilutive securities			12,633,408	16,405,749
Maximum
Anti-dilutive Securities
Shares consideration		8,000,000
Earnout first milestone	4,000,000
Employee Stock Option [Member]
Anti-dilutive Securities
Antidilutive securities			4,489,752	3,944,635
Warrant liability.
Anti-dilutive Securities
Antidilutive securities			1,945,548	2,925,936
Unvested Restricted Stock Awards
Anti-dilutive Securities
Antidilutive securities			1,698,108	118,511
Conversion Option
Anti-dilutive Securities
Antidilutive securities				416,667
Forfeitable Shares
Anti-dilutive Securities
Antidilutive securities			500,000	1,000,000
Earnout Consideration
Anti-dilutive Securities
Antidilutive securities			4,000,000	8,000,000