Commitments and Contingencies - Summary of Costs Recognized under License Agreements and Other Non-Cancellable Royalty and Milestone Obligations (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
License and other fees	$ 0	$ 500	$ 0
Milestone fees	0	250	100
Total license and related fees	$ 0	$ 750	$ 100

Non-milestone costs incurred related to licensing agreements. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark.

No definition available.

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Namespace Prefix:	otic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration