Average invested real estate assets.

No definition available.

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- Definition

Initial lease expiration period.

+ References

No definition available.

+ Details

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- Definition

Lease expiration, month and year.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Lease renewal, notice period.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Maximum amount of investment for development and construction.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Number of leased properties for medical office buildings and free standing emergency departments.

+ References

No definition available.

+ Details

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- Definition

Number of renewal options.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Operating leases, number of renewal options at existing lease rates.

+ References

No definition available.

+ Details

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Data Type:	xbrli:positiveIntegerItemType
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Period Type:	duration

- Definition

Percentage of cash available in excess of target distribution paid for incentive distributions.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Percentage of ownership interest related parties.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of target distribution must be exceeded by for incentive distributions.

+ References

No definition available.

+ Details

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Namespace Prefix:	uht_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period to purchase respective leased facilities after lease terms.

+ References

No definition available.

+ Details

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Namespace Prefix:	uht_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Renewal option terms additional period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Renewal option terms maximum additional period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Period Type:	instant

- Definition

Amount of expense for incentive rights held by the managing member or general partner, of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- Definition

The aggregate costs related to management of owned properties during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(d))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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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.

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Relationship with Universal Health Services, Inc. ("UHS") and Related Party Transactions - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2016 USD ($) Property Time	Mar. 31, 2015 USD ($)	Dec. 31, 2015
Related Party Transaction [Line Items]
Maximum amount of investment for development and construction	$ 21,100,000
Advisory fee	$ 767,000	$ 666,000
Minimum \| 5 Unconsolidated Limited Liability Companies
Related Party Transaction [Line Items]
Non-controlling equity interest, ownership percentage	33.00%
Maximum \| 5 Unconsolidated Limited Liability Companies
Related Party Transaction [Line Items]
Non-controlling equity interest, ownership percentage	95.00%
Universal Health Services, Inc
Related Party Transaction [Line Items]
Number of term renewal options \| Time	6
Additional renewal terms	5 years
Number of medical office buildings and free standing emergency departments \| Property	16
Option to renew lease, notice period prior to termination date of current term	90 days
Period to purchase respective leased facilities at same price after lease terms	180 days
Renewal period of respective leased facilities at same price after lease terms	180 days
Percentage ownership of outstanding shares	5.90%		5.90%
Number of renewal options at existing lease rates \| Time	3
Lease term scheduled end date	2016-12
Universal Health Services, Inc \| Customer Concentration Risk \| Revenues
Related Party Transaction [Line Items]
Percentage of revenues generated from leases	25.00%	25.00%
Universal Health Services, Inc \| Customer Concentration Risk \| Combined consolidated and unconsolidated revenue
Related Party Transaction [Line Items]
Percentage of revenues generated from leases	20.00%	20.00%
Universal Health Services, Inc \| Minimum
Related Party Transaction [Line Items]
Initial lease terms	13 years
Universal Health Services, Inc \| Maximum
Related Party Transaction [Line Items]
Initial lease terms	15 years
Universal Health Services of Delaware Inc
Related Party Transaction [Line Items]
Annual incentive fee to Advisor as percentage of cash available for distribution	20.00%
Incentive fees	$ 0	$ 0
Advisory fee	767,000	666,000
Average invested real estate assets	$ 438,000,000	$ 381,000,000
Universal Health Services of Delaware Inc \| Minimum
Related Party Transaction [Line Items]
Percentage of equity to be exceeded for incentive distribution	15.00%