Segment Reporting - Schedule of Total Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 779,908	$ 612,377
Operating segments | Healthcare
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	83,098	80,455
Operating segments | Office
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	39,619	38,633
Operating segments | Industrial
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	147,396	60,071
Operating segments | Self-Storage
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	54,491	57,305
Operating segments | Multifamily
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	67,368	67,866
Operating segments | Student Housing
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	239,052	242,014
Operating segments | Grocery-Anchored Retail
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	66,375	0
Operating segments | Real Estate Preferred Equity
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	22,697	21,088
Corporate, non-segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 59,812	$ 44,945