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Related Person Transactions - Five Star (Details) $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 29, 2016 USD ($) agreement community item	May 31, 2016 USD ($) property	Jun. 30, 2016 USD ($) community shares	Jun. 30, 2015 USD ($) community	Jun. 30, 2016 USD ($) community shares	Jun. 30, 2016 USD ($) community item shares	Jun. 30, 2016 USD ($) community property shares	Jun. 30, 2016 USD ($) community shares	Jun. 30, 2015 USD ($) community	Jul. 31, 2016 property	Apr. 30, 2016 property	Dec. 31, 2015 USD ($)	May 31, 2015	Dec. 31, 2001
Five Star
Related person transactions
Percentage of total shares outstanding			8.60%		8.60%	8.60%	8.60%	8.60%						100.00%
Investment in common shares | shares			4,235,000		4,235,000	4,235,000	4,235,000	4,235,000
Number of real estate properties leased | community			184	180	184	184	184	184	180
Number of pre-existing agreements | agreement	4
Number of combination or pooling agreements | agreement	9
Total rental income recognized			$ 48,234	$ 47,753				$ 96,341	$ 95,443
Estimated percentage rent payments received			1,388	1,393				2,861	2,824
Rents receivable			16,065		$ 16,065	$ 16,065	$ 16,065	16,065				$ 17,466
Five Star | Senior Living Communities
Related person transactions
Number of properties acquired or agreed to be acquired | community	7
Initial annual rent	$ 8,426
Purchase price excluding closing costs and working capital adjustments	$ 112,350
Annual rent percentage (as a percent)	4
Number of consecutive renewal terms of agreement | item	2
Renewal period	15 years
Number of pre-existing management agreements terminated | agreement	3
Number of new management agreements entered | agreement	10
Real estate improvements purchased								11,836	8,902
Increase or decrease in annual lease rent payable			949	717	$ 949	$ 949	$ 949	949	$ 717
Number of properties acquired, referred to as managed properties					62	62			60
Property management agreement expense			$ 2,819	$ 2,699				$ 5,623	$ 5,222
Five Star | Senior Living Communities | Georgia
Related person transactions
Purchase price excluding closing costs and working capital adjustments		$ 8,400
Number of living units | property		38
Five Star | Senior Living Communities | North Carolina
Related person transactions
Number of living units | property											87
Five Star | Senior Living Communities | Alabama
Related person transactions
Number of living units | property										163
First AL Pooling Agreement | Five Star
Related person transactions
Minimum annual rent from Five Star												$ 3,610
Management fees as a percentage of gross revenues	5.00%												3.00%
Incentive fee as percentage of the annual net operating income after the entity realizes an annual return equal to 8% of invested capital	20.00%												35.00%
Payment of capital expenditure as a percentage of the amount funded by entity	3											7
Number of consecutive period during which the entity must not receive the minimum return for the property management agreement to be subject to the pooling agreement	3 years
First AL Pooling Agreement | Five Star | Minimum
Related person transactions
Annual return as a percentage of invested surplus specified as a base for determining incentive fee													8.00%
First AL Pooling Agreement | Five Star | Maximum
Related person transactions
Annual return as a percentage of invested surplus specified as a base for determining incentive fee	7.00%
First AL Pooling Agreement | Five Star | Senior Living Communities
Related person transactions
Annual return as a percentage of invested surplus specified as a base for determining incentive fee												7.00%
Acquisition | MOBs
Related person transactions
Number of properties acquired or agreed to be acquired | property		1					2
Purchase price excluding closing costs and working capital adjustments		$ 45,000

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Aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due after one year (or one business cycle).

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Balance held at close of period in number of shares.

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The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

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