Real Estate Properties - Schedule of Real Estate Properties (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations $ in Thousands	1 Months Ended		3 Months Ended
	Mar. 31, 2019 USD ($) building	Feb. 28, 2019 USD ($) building	Mar. 31, 2019 USD ($) building
Real Estate [Line Items]
Number of Properties | building	2		2
Gross Sales Price			$ 2,975
MOBs
Real Estate [Line Items]
Gross Sales Price			$ 2,975
MOBs | Florida
Real Estate [Line Items]
Number of Properties | building		1
Gross Sales Price		$ 2,900
MOBs | Massachusetts
Real Estate [Line Items]
Number of Properties | building	1		1
Gross Sales Price	$ 75