Average invested real estate assets.

No definition available.

Name:	uht_AverageInvestedRealEstateAssets
Namespace Prefix:	uht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Ground lease agreement period.

+ References

No definition available.

+ Details

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

- Definition

Initial lease expiration period.

+ References

No definition available.

+ Details

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

- Definition

Lease expiration, month and year.

+ References

No definition available.

+ Details

Name:	uht_LeaseExpirationMonthAndYear
Namespace Prefix:	uht_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Lease renewal, notice period.

+ References

No definition available.

+ Details

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

- Definition

Maximum amount of investment for development and construction.

+ References

No definition available.

+ Details

Name:	uht_MaximumAmountOfInvestmentForDevelopmentAndConstruction
Namespace Prefix:	uht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	uht_NumberOfLeasedPropertiesForMedicalOfficeBuildingsAndFreeStandingEmergencyDepartments
Namespace Prefix:	uht_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of leased properties under construction for medical office buildings .

+ References

No definition available.

+ Details

Name:	uht_NumberOfLeasedPropertiesUnderConstructionForMedicalOfficeBuildings
Namespace Prefix:	uht_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of renewal options.

+ References

No definition available.

+ Details

Name:	uht_NumberOfRenewalOptions
Namespace Prefix:	uht_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of wholly-owned subsidiaries that provided notice.

+ References

No definition available.

+ Details

Name:	uht_NumberOfWhollyOwnedSubsidiariesThatProvidedNotice
Namespace Prefix:	uht_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	uht_OperatingLeasesNumberOfRenewalOptionsAtExistingLeaseRates
Namespace Prefix:	uht_
Data Type:	xbrli:positiveIntegerItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

Percentage of ownership interest related parties.

+ References

No definition available.

+ Details

Name:	uht_PercentageOfOwnershipInterestRelatedParties
Namespace Prefix:	uht_
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

Name:	uht_PercentageOfTargetDistributionMustBeExceededByForIncentiveDistributions
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

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

- Definition

Renewal option terms additional period.

+ References

No definition available.

+ Details

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

- Definition

Renewal option terms maximum additional period.

+ References

No definition available.

+ Details

Name:	uht_RenewalOptionTermsMaximumAdditionalPeriod
Namespace Prefix:	uht_
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=64851502&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=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The current amount of expenditures for a real estate project that has not yet been completed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.10)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Phase
-URI http://asc.fasb.org/extlink&oid=49177889

+ Details

Name:	us-gaap_DevelopmentInProcess
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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=66011266&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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

+ Details

Name:	us-gaap_IncentiveFeeExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_OwnedPropertyManagementCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=uht_UnconsolidatedLimitedLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=uht_UniversalHealthServicesIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=uht_HendersonMedicalPlazaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=uht_RevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=uht_CombinedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=uht_UniversalHealthServicesOfDelawareIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Relationship with Universal Health Services, Inc. ("UHS") and Related Party Transactions - Additional Information (Detail)	1 Months Ended	3 Months Ended			9 Months Ended
	Jun. 30, 2016 Subsidiary Time	Sep. 30, 2016 USD ($) Time	Mar. 31, 2016 USD ($) Time	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Property Time	Sep. 30, 2015 USD ($)	Dec. 31, 2015
Related Party Transaction [Line Items]
Advisory fee		$ 832,000		$ 708,000	$ 2,380,000	$ 2,067,000
Minimum \| 5 Unconsolidated Limited Liability Companies
Related Party Transaction [Line Items]
Non-controlling equity interest, ownership percentage		33.00%			33.00%
Maximum \| 5 Unconsolidated Limited Liability Companies
Related Party Transaction [Line Items]
Non-controlling equity interest, ownership percentage		95.00%			95.00%
Universal Health Services, Inc
Related Party Transaction [Line Items]
Number of term renewal options \| Time		6			6
Additional renewal terms					5 years
Number of medical office buildings and free standing emergency departments \| Property					17
Number of medical office buildings under construction \| Property					1
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
Number of wholly-owned subsidiaries \| Subsidiary	3
Extended lease terms at existing lease rates					2021-12
Number of renewal options at existing lease rates \| Time	3
Percentage ownership of outstanding shares		5.80%			5.80%		5.90%
Universal Health Services, Inc \| Henderson Medical Plaza
Related Party Transaction [Line Items]
Number of term renewal options \| Time			2
Additional renewal terms			10 years
Maximum amount of investment for development and construction			$ 21,100,000
Ground lease agreement period			75 years
Amount invested in MOB under construction		$ 4,600,000			$ 4,600,000
Universal Health Services, Inc \| Customer Concentration Risk \| Revenues
Related Party Transaction [Line Items]
Percentage of revenues generated from leases		23.00%		25.00%	24.00%	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		19.00%		20.00%	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%			20.00%
Incentive fees					$ 0	$ 0
Advisory fee		$ 832,000		$ 708,000	2,400,000	2,100,000
Average invested real estate assets		$ 475,000,000		$ 405,000,000	$ 453,000,000	$ 394,000,000
Universal Health Services of Delaware Inc \| Minimum
Related Party Transaction [Line Items]
Percentage of equity to be exceeded for incentive distribution		15.00%			15.00%