Notes Receivable - Notes Receivable Activity - Loan Commitment (Details) $ in Thousands	9 Months Ended
Sep. 30, 2019 USD ($) item	Dec. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mezzanine loan Funded	$ 6,800
Mezzanine loan with 12.0% Interest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mezzanine loan Funded	$ 13,284	$ 9,868
204-unit ILF/ALF/MC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Beds or Units under Development \| item	204
Loan Term	5 years
Interest rate (as a percent)	12.00%
204-unit ILF/ALF/MC \| $1400 note agreement
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mezzanine loan Funded	$ 1,124
Mezzanine Loan Committed to fund	$ 276
Interest rate (as a percent)	7.00%
Notes Receivable Principal Amount	$ 1,400
204-unit ILF/ALF/MC \| $550 Note Agreement
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mezzanine loan Funded	400
Mezzanine Loan Committed to fund	$ 150
Interest rate (as a percent)	7.50%
Notes Receivable Principal Amount	$ 550
204-unit ILF/ALF/MC \| Mezzanine loan with 12.0% Interest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Term	46 months

Represents the amortization period of mortgage loan on real estate properties.

No definition available.

Name:	ltc_MortgageLoansOnRealEstateAmortizationPeriod
Namespace Prefix:	ltc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of notes receivable committed to fund.

+ References

No definition available.

+ Details

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Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of principal amount of notes receivable.

+ References

No definition available.

+ Details

Name:	ltc_NotesReceivablePrincipalAmount
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the number of beds/units under development.

+ References

No definition available.

+ Details

Name:	ltc_NumberOfBedsOrUnitsUnderDevelopment
Namespace Prefix:	ltc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Paragraph Column B
-Subsection 29

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column B))
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

Name:	srt_MortgageLoansOnRealEstateInterestRate
Namespace Prefix:	srt_
Data Type:	num:percentItemType
Balance Type:	na
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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before allowance for credit loss, of financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919230-210447

+ Details

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

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ltc_MezzanineLoansReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ltc_PropertyWith204CombinedIndependentLivingCommunitiesAssistedLivingAndMemoryCareUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ltc_MezzanineLoansReceivableDollar1400NoteAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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