Notes Receivable - New Loan Commitment (Details) - Mezzanine loans	3 Months Ended
Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)
Notes receivable activities
Notes receivable, gross	$ 9,868,000	$ 13,700,000
204-unit ILF/ALF/MC
Notes receivable activities
Notes receivable, gross	$ 6,828,000
Number of beds/units under development \| item	204
Loan Term	5 years
Interest rate (as a percent)	12.00%
Mezzanine loan with 8% Interest, fixed for 46 months, and increasing to 12% thereafter \| 204-unit ILF/ALF/MC
Notes receivable activities
Loan Term	46 months
Interest rate (as a percent)	8.00%
Mezzanine loan with 12% Interest \| 204-unit ILF/ALF/MC
Notes receivable activities
Interest rate (as a percent)	12.00%

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

No definition available.

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

- 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
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- 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

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

- References

No definition available.

+ Details

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

- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(3))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
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- Details

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