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Real Estate Investments - Property Sales (Details) | 1 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2018 USD ($) property | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Disposals and other |  |  |
Carrying value |  | $ 1,086,061,000 | $ 1,086,089,000
ALF | Subsequent Event |  |  |
Disposals and other |  |  |
Number of properties sold | property | 6 |  |
Number of beds or units in property sold | property | 320 |  |
Carrying value | $ 16,350,000 |  |
Sales price | 67,500,000 |  |
Gain (loss) on sale of properties | $ 48,000,000 |  |

X
- Definition The number of beds or units in a real estate property sold by the entity. + References No definition available. + Details
Name: | ltc_NumberOfBedsOrUnitsInRealEstatePropertySold
Namespace Prefix: | ltc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of real estate properties sold by the entity. + References No definition available. + Details
Name: | ltc_NumberOfRealEstatePropertiesSold
Namespace Prefix: | ltc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sales price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. + References No definition available. + Details
Name: | ltc_SalesPriceOfRealEstateHeldForInvestment
Namespace Prefix: | ltc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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X
- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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X
- Details
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