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Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($) item | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Revenue Recognition |  |  |
Maximum period over which loan is to be considered as non-performing | 60 days |  |
Contingent rental income | $ | $ 57 | $ 0 | $ 111
Minimum |  |  |
Revenue Recognition |  |  |
Methods used for calculation of annual increases over the rents of the prior year | 1 |  |
Specified annual increase over the prior year's rent (as a percent) | 2.00% |  |
Maximum |  |  |
Revenue Recognition |  |  |
Methods used for calculation of annual increases over the rents of the prior year | 4 |  |
Specified annual increase over the prior year's rent (as a percent) | 3.00% |  |

X
- Definition Represents the increase in rent expressed as percentage, over the prior year's rent. + References No definition available. + Details
Name: | ltc_AnnualIncreaseInRent
Namespace Prefix: | ltc_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of contingent rental income. + References No definition available. + Details
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Namespace Prefix: | ltc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the maximum period after which the amount of principal due on mortgage loans becomes delinquent. + References No definition available. + Details
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Namespace Prefix: | ltc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of methods used in calculation of annual increase in rent over prior year's rent. + References No definition available. + Details
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Namespace Prefix: | ltc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- 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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- Details
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