Subsequent Events - Oncology Association Acquisition (Details) - TOI Parent Inc. - Subsequent events - Oncology Association	Apr. 30, 2021 USD ($) installment
Subsequent Events
Consideration for asset purchase	$ 500,000
Consideration paid in cash at closing	$ 200,000
Number of cash installments in annual anniversary \| installment	3

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

Represents the number of installments in annual anniversary.

+ References

No definition available.

+ Details

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Namespace Prefix:	toi_
Data Type:	xbrli:integerItemType
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- 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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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: