Investment Activity - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) states healthcareproperty
Noncash or Part Noncash Acquisitions [Line Items]
Asset acquisition, consideration transferred	$ 18,989
Payments for loans receivable and payments to acquire real estate	$ 19,000
Two Healthcare Properties Acquired in 2020
Noncash or Part Noncash Acquisitions [Line Items]
Number of operating healthcare properties | healthcareproperty	2
Number of states in which operating healthcare properties and land parcel located | states	2
Asset acquisition, consideration transferred	$ 12,200
Loan Investments
Noncash or Part Noncash Acquisitions [Line Items]
Asset acquisition, consideration transferred	$ 6,600