Real Estate Investments - Mortgage Loan (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($) loan property item state $ / item
Mortgage Loans
Real Estate [Line Items]
Gross Investment \| $	$ 260,267
Percentage of Investment	100.00%
Number of Loans \| loan	4
Number of properties \| property	22
Investment per Bed/Unit \| $ / item	92.82
Loan Term	30 years
Number of states \| state	1
Number of operators	1
Mortgage loans with 9.90% Interest Maturing 2043 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Interest rate (as a percent)	9.90%
Gross Investment \| $	$ 186,865
Percentage of Investment	71.80%
Number of Loans \| loan	1
Number of properties \| property	15
Investment per Bed/Unit \| $ / item	96.27
Mortgage loans with 9.20% Interest Maturing 2045 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Interest rate (as a percent)	9.20%
Gross Investment \| $	$ 38,853
Percentage of Investment	14.90%
Number of Loans \| loan	1
Number of properties \| property	4
Investment per Bed/Unit \| $ / item	77.55
Mortgage loans with 9.40% Interest Maturing 2045 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Interest rate (as a percent)	9.40%
Gross Investment \| $	$ 19,624
Percentage of Investment	7.60%
Number of Loans \| loan	1
Number of properties \| property	2
Investment per Bed/Unit \| $ / item	95.73
Mortgage loans with 9.6% Interest Maturing 2045 \| SNF
Real Estate [Line Items]
Interest rate (as a percent)	9.60%
Mortgage loans with 9.6% Interest Maturing 2045 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Gross Investment \| $	$ 14,925
Percentage of Investment	5.70%
Number of Loans \| loan	1
Number of properties \| property	1
Investment per Bed/Unit \| $ / item	95.06
SNF Beds \| Mortgage Loans
Real Estate [Line Items]
Number of beds/units	2,804
SNF Beds \| Mortgage loans with 9.90% Interest Maturing 2043 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Number of beds/units	1,941
SNF Beds \| Mortgage loans with 9.20% Interest Maturing 2045 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Number of beds/units	501
SNF Beds \| Mortgage loans with 9.40% Interest Maturing 2045 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Number of beds/units	205
SNF Beds \| Mortgage loans with 9.6% Interest Maturing 2045 \| SNF \| Mortgage Loans
Real Estate [Line Items]
Number of beds/units	157

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

Represents the number of operators associated with certain investments.

+ References

No definition available.

+ Details

Name:	ltc_RealEstateInvestmentsNumberOfOperatorsInStates
Namespace Prefix:	ltc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of states in which the entity has invested.

+ References

No definition available.

+ Details

Name:	ltc_RealEstateInvestmentsNumberOfStates
Namespace Prefix:	ltc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the per unit investment in real estate held solely for investment purposes.

+ References

No definition available.

+ Details

Name:	ltc_RealEstateInvestmentsPerUnit
Namespace Prefix:	ltc_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the investments in real estate held solely for investment purposes expressed as a percentage.

+ References

No definition available.

+ Details

Name:	ltc_RealEstateInvestmentsPercentage
Namespace Prefix:	ltc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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=120402547&loc=d3e617274-123014

+ Details

Name:	srt_MortgageLoansOnRealEstateInterestRate
Namespace Prefix:	srt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of mortgage loans 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
-Footnote 3
-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(Footnote 3))
-URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014

+ Details

Name:	srt_MortgageLoansOnRealEstateNumberOfLoans
Namespace Prefix:	srt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of units in a real estate property owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

Name:	us-gaap_RealEstateInvestmentPropertyAtCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

No definition available.

+ Details

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

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_MortgagesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgagesWith9.90PercentInterestMaturing2043Member
Namespace Prefix:
Data Type:	na
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- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ltc_SkilledNursingPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgagesWith9.20PercentInterestMaturing2045Member
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgagesWith9.40PercentInterestMaturing2045Member
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgagesWith9.6PercentInterestMaturing2045Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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