Fair Value Measurements (Details) $ in Thousands	Sep. 30, 2018 USD ($) item	Dec. 31, 2017 USD ($) item
Fair value measurements
Mortgage loans receivable	$ 242,609	$ 223,907
Senior unsecured notes, net of debt issue costs	550,986	571,002
Accrued incentives and earn-outs	$ 9,292	$ 8,916
Level 3 \| Senior Unsecured Notes maturing before 2026 \| Discount Rate
Fair value measurements
Future cash outflows discount rate (as a percent) \| item	0.05	4.10
Level 3 \| Senior Unsecured Notes maturing 2026 and after \| Discount Rate
Fair value measurements
Future cash outflows discount rate (as a percent) \| item	5.25	4.30
Level 3 \| Accrued incentives and earn-out liabilities \| Discount Rate
Fair value measurements
Future cash outflows discount rate (as a percent) \| item	0.06	6.2
Level 3 \| Mortgage Loans Receivable \| Discount Rate
Fair value measurements
Future cash inflows discount rate (as a percent) \| item	9.7	8.70
Carrying Value
Fair value measurements
Mortgage loans receivable	$ 242,609	$ 223,907
Bank borrowings	120,000	96,500
Senior unsecured notes, net of debt issue costs	550,986	571,002
Accrued incentives and earn-outs	9,292	8,916
Fair Value
Fair value measurements
Bank borrowings	120,000	96,500
Fair Value \| Level 3
Fair value measurements
Mortgage loans receivable	274,698	278,224
Senior unsecured notes, net of debt issue costs	529,805	577,126
Accrued incentives and earn-outs	$ 9,292	$ 8,916

This element represents the liabilities for earn out payments.

No definition available.

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

- Definition

Value of input used to measure debt instrument, including, but not limited to, convertible and non-convertible debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

+ Details

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Balance Type:	na
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

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Balance Type:	na
Period Type:	duration

- Definition

Fair value of the amount outstanding under the credit facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

+ Details

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

- Definition

Value of input used to measure long-term debt.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

+ 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(c))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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