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Debt Obligations (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
property
Debt Obligations      
Amount outstanding Senior Unsecured Notes $ 277,467,000us-gaap_UnsecuredDebt   281,633,000us-gaap_UnsecuredDebt
Amount outstanding under Unsecured Credit Agreement 36,500,000us-gaap_LineOfCredit    
Line of Credit [Member]      
Debt Obligations      
Maximum availability under Unsecured Credit Agreement 400,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Possible total maximum availability under Unsecured Credit Agreement 600,000,000ltc_LineOfCreditFacilityPossibleTotalMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Additional extension period option 1 year    
Unused commitment fee (as a percent) 0.30%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Amount borrowed 36,500,000us-gaap_ProceedsFromLinesOfCredit
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
20,000,000us-gaap_ProceedsFromLinesOfCredit
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
 
Amount outstanding under Unsecured Credit Agreement 36,500,000us-gaap_LineOfCredit
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Amount available for borrowing under Unsecured Credit Agreement 363,500,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
   
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Obligations      
Description of interest rate LIBOR    
Basis spread over base rate (as a percent) 1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= us-gaap_LineOfCreditMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
   
Senior Unsecured Debt [Member]      
Debt Obligations      
Repayments of debt 4,167,000us-gaap_RepaymentsOfDebt
/ us-gaap_DebtInstrumentAxis
= ltc_SeniorUnsecuredDebtMember
4,167,000us-gaap_RepaymentsOfDebt
/ us-gaap_DebtInstrumentAxis
= ltc_SeniorUnsecuredDebtMember
 
Amount outstanding Senior Unsecured Notes 277,467,000us-gaap_UnsecuredDebt
/ us-gaap_DebtInstrumentAxis
= ltc_SeniorUnsecuredDebtMember
  281,633,000us-gaap_UnsecuredDebt
/ us-gaap_DebtInstrumentAxis
= ltc_SeniorUnsecuredDebtMember
Senior Unsecured Debt [Member] | Weighted Average [Member]      
Debt Obligations      
Weighted average interest rate (as a percent) 4.80%us-gaap_DebtInstrumentInterestRateDuringPeriod
/ us-gaap_DebtInstrumentAxis
= ltc_SeniorUnsecuredDebtMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
   
Amended and Restated Uncommitted Private Shelf Agreement [Member] | Subsequent Event [Member]      
Debt Obligations      
Debt instrument term 3 years    
Maximum available for issuance 200,000,000ltc_DebtInstrumentMaximumAuthorizedForIssuanceUnderPrivateShelfAgreement
/ us-gaap_DebtInstrumentAxis
= ltc_AmendedAndRestatedUncommittedPrivateShelfAgreementMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Maximum availability under the private shelf agreement for senior unsecured term note issuances 102,000,000ltc_DebtInstrumentMaximumAvailabilityForSeniorUnsecuredTermNoteIssuanceUnderPrivateShelfAgreement
/ us-gaap_DebtInstrumentAxis
= ltc_AmendedAndRestatedUncommittedPrivateShelfAgreementMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
   
Maximum average life of the loan from the date of original issuance 12 years    
Amended and Restated Uncommitted Private Shelf Agreement [Member] | Subsequent Event [Member] | Maximum [Member]      
Debt Obligations      
Maximum maturity period of each debt issuance under the shelf agreement 15 years    
Bonds [Member]      
Debt Obligations      
Repayments of debt   $ 635,000us-gaap_RepaymentsOfDebt
/ us-gaap_DebtInstrumentAxis
= us-gaap_BondsMember
 
Number of assisted living properties securing debt instruments     5ltc_DebtInstrumentNumberOfCollateralProperties
/ us-gaap_DebtInstrumentAxis
= us-gaap_BondsMember