Represents the number of beds/units in the acquired business.

No definition available.

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

- Definition

Represents the amount of investment commitments of the entity.

+ References

No definition available.

+ Details

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

- Definition

Represents the number of beds/units under development.

+ References

No definition available.

+ Details

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

- Definition

Represents the percentage of economic interest in joint venture under real estate investments.

+ References

No definition available.

+ Details

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

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 30
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-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- References

No definition available.

+ Details

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

- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 3
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Name:	us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ltc_Acquisitions2017Member
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ltc_AssistedLivingPropertiesMember
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Data Type:	na
Balance Type:
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Name:	us-gaap_BusinessAcquisitionAxis=ltc_Acquisitions2018Member
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Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ltc_AssistedLivingAndMemoryCarePropertiesMember
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Data Type:	na
Balance Type:
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- Details

Name:	invest_InvestmentGeographicRegionAxis=stpr_OR
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ltc_PropertiesUnderDevelopmentMember
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Data Type:	na
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Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=ltc_IndependentLivingFacilitiesMember
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Data Type:	na
Balance Type:
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Data Type:	na
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Name:	invest_InvestmentGeographicRegionAxis=stpr_SC
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Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ltc_PropertyWith110CombinedIndependentLivingCommunitiesAssistedLivingAndMemoryCareUnitsMember
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- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=ltc_IndependentLivingCommunitiesPropertyWith89UnitsMember
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Data Type:	na
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Equity - Noncontrolling Interest (Details) $ in Thousands	3 Months Ended	12 Months Ended
Equity - Noncontrolling Interest (Details) $ in Thousands	Mar. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($) item
Noncontrolling interest
Gross Consolidated Assets		$ 46,866
Non-controlling interests		7,481	$ 3,488
Investment Commitment		$ 184,560
2017 Acquisitions
Noncontrolling interest
Number of beds/units acquired \| item			400
Purchase Price			$ 81,818
2017 Acquisitions \| ALF
Noncontrolling interest
Number of beds/units acquired \| item			400
Purchase Price			$ 81,018
2018 Acquisitions
Noncontrolling interest
Number of beds/units acquired \| item		177
Purchase Price		$ 40,295
Economic interest in joint venture		88.00%
2018 Acquisitions \| ALF
Noncontrolling interest
Number of beds/units acquired \| item		177
Purchase Price		$ 39,600
2018 Acquisitions \| ALF and MC
Noncontrolling interest
Economic interest in joint venture	95.00%
Oregon \| 2018 Acquisitions \| Properties under Development
Noncontrolling interest
Gross Consolidated Assets		4,606
Non-controlling interests		1,081
Oregon \| 2018 Acquisitions \| ILF
Noncontrolling interest
Gross Consolidated Assets		14,400
Non-controlling interests		2,857
Wisconsin \| 2017 Acquisitions \| Properties under Development
Noncontrolling interest
Gross Consolidated Assets		16,665
Non-controlling interests		2,272
South Carolina \| 2017 Acquisitions \| ALF
Noncontrolling interest
Gross Consolidated Assets		11,195
Non-controlling interests		1,271
110-unit ILF/ALF/MC \| Wisconsin \| 2017 Acquisitions \| ALF/ILF/MC
Noncontrolling interest
Investment Commitment			$ 22,471
Number of beds/units under development \| item			110
89-unit ILF \| 2018 Acquisitions \| ILF
Noncontrolling interest
Non-controlling interests		2,857
Purchase Price		14,400
Investment Commitment		$ 11,543
Number of beds/units under development \| item		89
78-unit ALF/MC \| 2018 Acquisitions \| ALF and MC
Noncontrolling interest
Non-controlling interests		$ 1,081
Number of beds/units acquired \| item		78
Purchase Price		$ 18,108
Investment Commitment		$ 17,027
Number of beds/units under development \| item		78
74-Unit ALF/MC \| ALF and MC
Noncontrolling interest
Number of beds/units acquired \| item	74
Economic interest in joint venture	95.00%
74-Unit ALF/MC \| 2018 Acquisitions \| ALF and MC
Noncontrolling interest
Non-controlling interests	$ 919
Investment Commitment	$ 15,950