Class of warrant and rights, exercise price range, number of exercisable warrants.

No definition available.

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- Definition

Represents the weighted average exercise price of warrants exercisable.

+ References

No definition available.

+ Details

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- Definition

Class of warrant or right, exercise price range, outstanding warrants, weighted average remaining contractual term.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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- Definition

Represents the weighted average exercise price of warrants outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	rhe_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Class of warrant or right outstanding, exercise price.

+ References

No definition available.

+ Details

Name:	rhe_ClassOfWarrantorRightOutstandingExercisePrice
Namespace Prefix:	rhe_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of warrants or rights outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Balance Type:	na
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Stock Based Compensation - Options and Warrants Outstanding by Exercise Price (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding	58,000
Weighted Average Remaining Contractual Term (in years)	4 years
Vested and Exercisable	58,000
Warrant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding	58,000	85,000	85,000
Warrants Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 52.09	$ 45.53	$ 45.53
Warrant \| Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants Outstanding, Weighted Average Exercise Price (in dollars per share)	52.09
Warrants Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 52.09
$36.00 - $47.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding	14,000
Weighted Average Remaining Contractual Term (in years)	2 years 4 months 24 days
Vested and Exercisable	14,000
$36.00 - $47.99 \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price (in dollars per share)		36.00
$36.00 - $47.99 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price (in dollars per share)		47.99
$36.00 - $47.99 \| Warrant \| Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 46.71
Warrants Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 46.71
$48.00 - $59.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding	42,000
Weighted Average Remaining Contractual Term (in years)	4 years 6 months
Vested and Exercisable	42,000
$48.00 - $59.99 \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price (in dollars per share)		48.00
$48.00 - $59.99 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price (in dollars per share)		59.99
$48.00 - $59.99 \| Warrant \| Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 52.99
Warrants Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 52.99
$60.00 - $70.80
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding	2,000
Weighted Average Remaining Contractual Term (in years)	3 years 4 months 24 days
Vested and Exercisable	2,000
$60.00 - $70.80 \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price (in dollars per share)		60.00
$60.00 - $70.80 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Price (in dollars per share)		$ 70.80
$60.00 - $70.80 \| Warrant \| Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 70.80
Warrants Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 70.80