Construction loan outstanding balance.

No definition available.

Name:	uht_ConstructionLoanOutstandingBalance
Namespace Prefix:	uht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Conversion of loan to equity method investment.

+ References

No definition available.

+ Details

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

- Definition

Commitments to invest.

+ References

No definition available.

+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit terminated as of the reporting date.

+ References

No definition available.

+ Details

Name:	uht_LettersOfCreditTerminatedAmount
Namespace Prefix:	uht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Member loan used to repay mortgage loan.

+ References

No definition available.

+ Details

Name:	uht_MemberLoanUsedToRepayMortgageLoan
Namespace Prefix:	uht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Repayment of loan.

+ References

No definition available.

+ Details

Name:	uht_RepaymentOfLoan
Namespace Prefix:	uht_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_ConstructionLoan
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_LongTermLoansPayable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
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+ Details

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

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=uht_BrunswickAssociatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=uht_FTXMobPhaseTwoLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=uht_GraysonPropertiesTwoLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=uht_DenisonTexasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
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Period Type:

Limited Liability Companies Accounted for Under Equity Method (Parenthetical) (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2025	Mar. 31, 2024
Brunswick Associates
Schedule Of Equity Method Investments [Line Items]
Third-party term loan		$ 8,100,000
FTX MOB Phase II limited partnership
Schedule Of Equity Method Investments [Line Items]
Repayment of loan	$ 175,000
Conversion of Loan to Equity Method Investment	$ 3,300,000
Grayson Properties II LP
Schedule Of Equity Method Investments [Line Items]
Member loan used to repay mortgage loan		128,000
Construction loan			$ 5,700,000
Letters of Credit Terminated Amount		3,100,000
Construction loan outstanding balance		6,800,000
Grayson Properties II LP \| Denison Texas
Schedule Of Equity Method Investments [Line Items]
Commitment to investment		7,600,000
Grayson Properties II LP \| Maximum \| Denison Texas
Schedule Of Equity Method Investments [Line Items]
Commitment to investment		$ 10,100,000