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

No definition available.

Name:	ltc_BusinessAcquisitionNumberOfUnitsInBusinessAcquired
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

Name:	ltc_InvestmentCommitments
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

Name:	ltc_NumberOfBedsOrUnitsUnderDevelopment
Namespace Prefix:	ltc_
Data Type:	xbrli:integerItemType
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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

+ 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(22))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(24))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestAbstract
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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5710-111685

+ Details

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

Equity - Noncontrolling Interest (Details)	3 Months Ended	6 Months Ended		12 Months Ended
Equity - Noncontrolling Interest (Details)	Sep. 30, 2018 item	Jun. 30, 2018 USD ($) item	Jun. 30, 2017 USD ($) item	Dec. 31, 2017 USD ($) item
Noncontrolling interest
Non-controlling interests		$ 4,569,000		$ 3,488,000
Investment Commitment		208,201,000
Partnership
Noncontrolling interest
Gross Consolidated Assets		19,807,000
Non-controlling interests		$ 4,569,000
2017 Acquisitions
Noncontrolling interest
Number of beds/units acquired \| item			240
Purchase Price			$ 54,463,000
2017 Acquisitions \| ALF
Noncontrolling interest
Number of beds/units acquired \| item			240
Purchase Price			$ 54,463,000
2018 Acquisitions
Noncontrolling interest
Number of beds/units acquired \| item		88
Purchase Price		$ 25,800,000
2018 Acquisitions \| ALF
Noncontrolling interest
Number of beds/units acquired \| item		88
Purchase Price		$ 25,200,000
Oregon \| 2018 Acquisitions \| Partnership \| Properties under Development
Noncontrolling interest
Gross Consolidated Assets		2,291,000
Non-controlling interests		1,081,000
Wisconsin \| 2017 Acquisitions \| Partnership \| Properties under Development
Noncontrolling interest
Gross Consolidated Assets		7,053,000
Non-controlling interests		2,247,000
South Carolina \| 2017 Acquisitions \| Partnership \| ALF
Noncontrolling interest
Gross Consolidated Assets		10,463,000
Non-controlling interests		1,241,000
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
78-unit ALF/MC \| 2018 Acquisitions \| ALF and MC
Noncontrolling interest
Purchase Price		$ 18,108,000
Number of beds/units under development \| item		78
78-unit ALF/MC \| Oregon \| 2018 Acquisitions \| ALF and MC
Noncontrolling interest
Purchase Price		$ 18,108
Number of beds/units under development \| item		78
Forecast \| Oregon \| 2018 Acquisitions \| ILF
Noncontrolling interest
Number of beds/units acquired \| item	89
Forecast \| 89-unit ILF \| 2018 Acquisitions \| ILF
Noncontrolling interest
Number of beds/units acquired \| item	89