Real Estate Investments - Mortgage Loan (Details)	9 Months Ended
Sep. 30, 2022 USD ($) loan property item state $ / item
Real Estate [Line Items]
Interest rate (as a percent)	7.25%
Number of beds/units	217
Internal Rate of Return	8.00%
ALF
Real Estate [Line Items]
Number of properties \| property	2
Number of beds/units \| $	74
Mortgage loans with 7.3% Interest Maturing 2025 \| ALF
Real Estate [Line Items]
Internal Rate of Return	8.00%
Mortgage Loans
Real Estate [Line Items]
Gross Investment \| $	$ 386,868,000
Percentage of Investment	100.00%
Number of Loans \| loan	10
Number of properties \| property	41
Average Investment per Bed/Unit \| $ / item	103.89
Number of states \| state	6
Number of operators	5
Mortgage Loans \| SNF Beds
Real Estate [Line Items]
Number of beds/units	2,916
Mortgage Loans \| ALF Units
Real Estate [Line Items]
Number of beds/units	808
Mortgage Loans \| SNF
Real Estate [Line Items]
Interest rate (as a percent)	2.25%
Mortgage Loans \| Mortgage loans with 7.5% Interest Maturing 2022 \| OTH
Real Estate [Line Items]
Interest rate (as a percent)	7.50%
Gross Investment \| $	$ 1,886,000
Percentage of Investment	0.50%
Number of Loans \| loan	1
Mortgage Loans \| Mortgage loans with 7.5% Interest Maturing 2022 \| OTH \| SNF Beds
Real Estate [Line Items]
Number of beds/units	91
Mortgage Loans \| Mortgage loans with 7.5% Interest Maturing 2024 \| SNF
Real Estate [Line Items]
Interest rate (as a percent)	7.50%
Gross Investment \| $	$ 27,347,000
Percentage of Investment	7.10%
Number of Loans \| loan	1
Number of properties \| property	1
Average Investment per Bed/Unit \| $ / item	144.69
Mortgage Loans \| Mortgage loans with 7.5% Interest Maturing 2024 \| SNF \| SNF Beds
Real Estate [Line Items]
Number of beds/units	189
Mortgage Loans \| Mortgage loans with 7.8% Interest Maturing 2025 \| ALF
Real Estate [Line Items]
Interest rate (as a percent)	7.80%
Gross Investment \| $	$ 13,123,000
Percentage of Investment	3.40%
Number of Loans \| loan	1
Number of properties \| property	1
Average Investment per Bed/Unit \| $ / item	192.99
Mortgage Loans \| Mortgage loans with 7.8% Interest Maturing 2025 \| ALF \| ALF Units
Real Estate [Line Items]
Number of beds/units	68
Mortgage Loans \| Mortgage loans with 7.3% Interest Maturing 2025 \| ALF
Real Estate [Line Items]
Interest rate (as a percent)	7.30%
Gross Investment \| $	$ 52,812,000
Percentage of Investment	13.60%
Number of Loans \| loan	1
Number of properties \| property	13
Average Investment per Bed/Unit \| $ / item	100.98
Mortgage Loans \| Mortgage loans with 7.3% Interest Maturing 2025 \| ALF \| ALF Units
Real Estate [Line Items]
Number of beds/units	523
Mortgage Loans \| Mortgage loans with 7.3% Interest Maturing 2026 \| OTH
Real Estate [Line Items]
Interest rate (as a percent)	7.30%
Gross Investment \| $	$ 782,000
Percentage of Investment	0.20%
Number of Loans \| loan	1
Mortgage Loans \| Mortgage loans with 7.3% Interest Maturing 2026 \| ALF
Real Estate [Line Items]
Interest rate (as a percent)	7.30%
Gross Investment \| $	$ 32,373,000
Percentage of Investment	8.40%
Number of Loans \| loan	1
Number of properties \| property	4
Average Investment per Bed/Unit \| $ / item	149.18
Mortgage Loans \| Mortgage loans with 7.3% Interest Maturing 2026 \| ALF \| ALF Units
Real Estate [Line Items]
Number of beds/units	217
Mortgage Loans \| Mortgage loans with 10.4% Interest Maturing 2043 \| SNF
Real Estate [Line Items]
Interest rate (as a percent)	10.40%
Gross Investment \| $	$ 184,854,000
Percentage of Investment	47.80%
Number of Loans \| loan	1
Number of properties \| property	15
Average Investment per Bed/Unit \| $ / item	98.59
Mortgage Loans \| Mortgage loans with 10.4% Interest Maturing 2043 \| SNF \| SNF Beds
Real Estate [Line Items]
Number of beds/units	1,875
Mortgage Loans \| Mortgage loans with 9.5% Interest Maturing 2045 \| SNF
Real Estate [Line Items]
Interest rate (as a percent)	9.50%
Gross Investment \| $	$ 39,066,000
Percentage of Investment	10.10%
Number of Loans \| loan	1
Number of properties \| property	4
Average Investment per Bed/Unit \| $ / item	77.98
Mortgage Loans \| Mortgage loans with 9.5% Interest Maturing 2045 \| SNF \| SNF Beds
Real Estate [Line Items]
Number of beds/units	501
Mortgage Loans \| Mortgage loans with 9.8% Interest Maturing 2045 \| SNF
Real Estate [Line Items]
Interest rate (as a percent)	9.90%
Gross Investment \| $	$ 19,750,000
Percentage of Investment	5.10%
Number of Loans \| loan	1
Number of properties \| property	2
Average Investment per Bed/Unit \| $ / item	96.34
Mortgage Loans \| Mortgage loans with 9.8% Interest Maturing 2045 \| SNF \| SNF Beds
Real Estate [Line Items]
Number of beds/units	205
Mortgage Loans \| Mortgage loans with 10.0% Interest Maturing 2045 \| SNF
Real Estate [Line Items]
Interest rate (as a percent)	10.00%
Gross Investment \| $	$ 14,875,000
Percentage of Investment	3.80%
Number of Loans \| loan	1
Number of properties \| property	1
Average Investment per Bed/Unit \| $ / item	101.88
Mortgage Loans \| Mortgage loans with 10.0% Interest Maturing 2045 \| SNF \| SNF Beds
Real Estate [Line Items]
Number of beds/units	146

Represents the percentage of internal rate of return.

No definition available.

Name:	ltc_InternalRateOfReturn
Namespace Prefix:	ltc_
Data Type:	dtr-types:percentItemType
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:	dtr-types: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 https://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014

+ Details

Name:	srt_MortgageLoansOnRealEstateInterestRate
Namespace Prefix:	srt_
Data Type:	dtr-types: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 https://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 https://asc.fasb.org/extlink&oid=126734703&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:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ltc_AssistedLivingPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgageLoansWith7.3InterestMaturing2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_MortgagesMember
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:

- Details

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

- Details

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

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgagesWith7.5PercentInterestMaturing2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgageLoansWith7.5InterestMaturing2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgageLoansWith7.8InterestMaturing2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgageLoansWith7.3InterestMaturing2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgageLoansWith10.4InterestMaturing2043Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgageLoansWith9.5InterestMaturing2045Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgagesWith9.6PercentInterestMaturing2045LoanOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgageLoansWith10.0InterestMaturing2045Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: