XML 50 R38.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Business and Property Management Agreements with RMR LLC (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) employee | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) property employee management_agreement | Sep. 30, 2017 USD ($)
Related person transactions |  |  |  |  |
Number of employees | employee |  | 0 |  | 0 |
Related party transaction business management agreement incentive fee paid | $ 55,740 |  |  |  |
Property management and construction supervision fees |  | $ 3,025 | $ 2,736 | $ 8,829 | $ 8,034
Property management and construction supervision fees paid |  | 3,440 | 2,353 | 9,391 | 7,116
Professional fees |  | 35 | 72 | 173 | 206
RMR LLC |  |  |  |  |
Related person transactions |  |  |  |  |
Business management fees incurred |  | 28,306 | 17,744 | 78,119 | 50,956
Related party transaction business management fees related to subsidiary level management |  | 725 | 725 | 2,175 | 1,512
Related party transaction business management agreement, annual incentive fee estimate included in management fees |  | $ 18,751 | $ 8,022 | $ 50,708 | $ 22,048
Related party transaction, incentive fee payable assessment period |  |  |  | 3 years |
Senior Living Communities | RMR Inc |  |  |  |  |
Related person transactions |  |  |  |  |
Number of consecutive renewal terms of agreement | management_agreement |  |  |  | 2 |
Number of communities managed by related party | property |  |  |  | 1 |

X
- Definition Represents the number of communities managed by a related party. + References No definition available. + Details
Name: | snh_NumberOfCommunitiesManagedByRelatedParty
Namespace Prefix: | snh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of persons employed by a related party of the entity. + References No definition available. + Details
Name: | snh_RelatedPartyEmployeesNumber
Namespace Prefix: | snh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related Party Transaction, Business Management Agreement Annual Incentive Fee Estimate Included in Management Fees + References No definition available. + Details
Name: | snh_RelatedPartyTransactionBusinessManagementAgreementAnnualIncentiveFeeEstimateIncludedinManagementFees
Namespace Prefix: | snh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related Party Transaction Business Management Agreement Incentive Fee Paid + References No definition available. + Details
Name: | snh_RelatedPartyTransactionBusinessManagementAgreementIncentiveFeePaid
Namespace Prefix: | snh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the business management fees incurred pursuant to business management agreement with related parties. + References No definition available. + Details
Name: | snh_RelatedPartyTransactionBusinessManagementFees
Namespace Prefix: | snh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related Party Transaction Business Management Fees Related to Subsidiary Level Management + References No definition available. + Details
Name: | snh_RelatedPartyTransactionBusinessManagementFeesRelatedtoSubsidiaryLevelManagement
Namespace Prefix: | snh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Related Party Transaction, Incentive Fee Payable Assessment Period + References No definition available. + Details
Name: | snh_RelatedPartyTransactionIncentiveFeePayableAssessmentPeriod
Namespace Prefix: | snh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of consecutive renewal terms of agreement that the entity has the option to renew. + References No definition available. + Details
Name: | snh_RelatedPartyTransactionPropertyManagementAgreementNumberOfConsecutiveRenewalTerms
Namespace Prefix: | snh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the property management and construction supervision fees incurred pursuant to business and property management agreements with related parties. + References No definition available. + Details
Name: | snh_RelatedPartyTransactionPropertyManagementAndConstructionSupervisionFees
Namespace Prefix: | snh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the property management and construction supervision fees paid to related parties. + References No definition available. + Details
Name: | snh_RelatedPartyTransactionPropertyManagementAndConstructionSupervisionFeesPaid
Namespace Prefix: | snh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.2(a),(b),(c),(d)) -URI http://asc.fasb.org/extlink&oid=114873854&loc=SL114874292-224272 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section 45 -Paragraph 3 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=114873831&loc=SL114874205-224268 + Details
Name: | us-gaap_ProfessionalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=snh_ReitManagementAndResearchLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=snh_SeniorLivingCommunityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=snh_ReitManagementAndResearchIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |