Subsequent Events (Details) - TOI Parent Inc. - Subsequent events	Nov. 12, 2021 USD ($) installment	Apr. 30, 2021 USD ($)
Oncology Association
Subsequent Events
Consideration for asset purchase		$ 500,000
Consideration paid in cash at closing		$ 200,000
Orr Practice Acquisition
Subsequent Events
Consideration for asset purchase	$ 1,000,000
Consideration paid in cash at closing	$ 800,000
Number of installment payments to be made \| installment	2
Grant Practice Acquisition
Subsequent Events
Consideration for asset purchase	$ 1,000,000
Consideration paid in cash at closing	$ 800,000
Number of installment payments to be made \| installment	2

Amount of consideration transferred in asset acquisition. Includes, but is not limited to, cash, liability incurred by acquirer, and equity interest issued by acquirer.

No definition available.

+ Details

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Namespace Prefix:	toi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The number of installment payment to be made in the asset acquisition transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	toi_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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Namespace Prefix:
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- Details

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- Details

Name:	toi_AssetAcquisitionAxis=toi_OncologyAssociationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	toi_AssetAcquisitionAxis=toi_OrrPracticeAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: