Royalty Purchase Agreement - Activity of the Revenue purchase agreement (Details) $ in Thousands	3 Months Ended
Mar. 31, 2026 USD ($)
Royalty Purchase Agreement
Beginning balance	$ 16,482
Non-cash interest expense on liability	1,305
Ending balance	$ 17,787

This amount of contractual agreement where an investor pays upfront to receive a share of future revenues. It defines the terms of the purchase, including the products involved, payment structure, and rights of the investor.

No definition available.

Name:	obio_RevenueInterestPurchaseAgreementLiability
Namespace Prefix:	obio_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant