Organization and Summary of Significant Accounting Policies (Details)	12 Months Ended
Dec. 31, 2020 state clinic item location segment
Number of segments \| segment	2
Patient Care
Patient care clinics \| clinic	704
Satellite locations	112
Number of states where satellite's are located \| state	46
Locations opened or acquired	59
Locations closed or consolidated	55
Products & Services
Skilled nursing and post-acute providers receiving programs \| item	4,000

Number of orthotic and prosthetic patient-care centers operated by the reporting entity.

No definition available.

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Namespace Prefix:	hgr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The minimum number of orthotic and prosthetic provider network of clinics managed by the reporting entity.

+ References

No definition available.

+ Details

Name:	hgr_MinimumNumberOfOrthoticAndProstheticProviderNetworkOfClinicsManaged
Namespace Prefix:	hgr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the minimum number of skilled nursing facilities for which the acquiree has contracts to serve.

+ References

No definition available.

+ Details

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

- Definition

The number of patient care locations closed during the period.

+ References

No definition available.

+ Details

Name:	hgr_NumberOfPatientCareLocationsClosed
Namespace Prefix:	hgr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of patient care locations opened during the period.

+ References

No definition available.

+ Details

Name:	hgr_NumberOfPatientCareLocationsOpened
Namespace Prefix:	hgr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

+ Details

Name:	us-gaap_NumberOfOperatingSegments
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfStatesInWhichEntityOperates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=hgr_PatientCareCentersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=hgr_ProductsAndServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: