No definition available.

Name:	invest_InvestmentLineItems
Namespace Prefix:	invest_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase (decrease) during the reporting period in the value of mortgage loans.

+ References

No definition available.

+ Details

Name:	ltc_IncreaseDecreaseInMortgageLoans
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Mortgage loan related to the bank premiums.

+ References

No definition available.

+ Details

Name:	ltc_MortgageLoanPremiumsForBank
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total amount of new mortgage loans and other additions on real estate during the reporting period.

+ References

No definition available.

+ Details

Name:	ltc_MortgageLoansOnRealEstateAdditions
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

The amount of scheduled principal collected on mortgage loans on real estate during the reporting period. Excludes mortgage payoffs.

+ References

No definition available.

+ Details

Name:	ltc_MortgageLoansOnRealEstateCollectionsOfScheduledPrincipalPayments
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the basis points specified for an increase in annual interest rate on mortgage loan receivable.

+ References

No definition available.

+ Details

Name:	ltc_MortgageLoansOnRealEstateInterestRateAnnualIncreaseSpecifiedBasisPoints
Namespace Prefix:	ltc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Total amount of new mortgage loans and other additions on real estate during the reporting period.

+ References

No definition available.

+ Details

Name:	ltc_MortgageLoansOnRealEstateNewMortgageLoansAndOtherAdditions
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the proceeds received from the early payoff of a mortgage loan.

+ References

No definition available.

+ Details

Name:	ltc_ProceedsFromPayoffOfMortgageLoan
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The Amount of expense related to loss recovery from loan and loss of reserve

+ References

No definition available.

+ Details

Name:	ltc_ProvisionForRecoveryOfLoanLossReserve
Namespace Prefix:	ltc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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

- Details

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

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ltc_MortgagesWith9.41PercentsInterestWithEscalationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=stpr_MI
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_MortgagesWith8.7PercentInterestWithEscalationMember
Namespace Prefix:
Data Type:	na
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Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ltc_SkilledNursingFacilityBedsMember
Namespace Prefix:
Data Type:	na
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Real Estate Investments - Mortgage Loans Activity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)
Mortgage Loans
Originations and fundings under mortgage loans receivable	$ 12,342	$ 21,364	$ 11,913
Pay-offs received		(1,086)	(16,665)
Scheduled principal payments received	(1,065)	(1,050)	(1,198)
Mortgage loan premium amortization	(4)	(4)	(4)
(Provision for) recovery of loan loss reserve	(113)	(192)	60
Net increase (decrease) in mortgage loans receivable	$ 11,160	$ 19,032	$ (5,894)
Mortgage Loans
Mortgage Loans
Loan Term	30 years
Mortgage Loans \| Minimum
Mortgage Loans
Interest rate (as a percent)	9.20%
Mortgage Loans \| Maximum
Mortgage Loans
Interest rate (as a percent)	9.90%
Mortgages with 9.41% Interest, fixed for two years, and escalating by 2.25% thereafter \| Mortgage Loans
Mortgage Loans
Additions to mortgage loans	$ 7,500
Interest rate (as a percent)	9.41%
Loan Term	2 years
Specified basis points for annual increase in interest rate (as a percent)	2.25%
Michigan \| SNF \| Mortgages with 8.7% Interest, fixed for five years, and escalating by 2.25% thereafter
Mortgage Loans
Interest rate (as a percent)		8.70%
Loan Term		5 years
Specified basis points for annual increase in interest rate (as a percent)		2.25%
Michigan \| SNF \| Mortgages with 8.7% Interest, fixed for five years, and escalating by 2.25% thereafter \| Mortgage Loans
Mortgage Loans
Additions to mortgage loans		$ 7,400
Michigan \| SNF \| Mortgages with 9.41% Interest, fixed for five years, and escalating by 2.25% thereafter
Mortgage Loans
Additions to mortgage loans		$ 7,125
Interest rate (as a percent)		9.41%
Loan Term		5 years
Specified basis points for annual increase in interest rate (as a percent)		2.25%
SNF Beds \| Michigan \| SNF \| Mortgages with 8.7% Interest, fixed for five years, and escalating by 2.25% thereafter
Mortgage Loans
Number of beds/units \| item		112
SNF Beds \| Michigan \| SNF \| Mortgages with 9.41% Interest, fixed for five years, and escalating by 2.25% thereafter
Mortgage Loans
Number of beds/units \| item		126