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Related Party Transactions and Arrangements (Narrative) (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Related Party Transaction [Line Items]    
Common stock, shares outstanding (in shares) 100,737,224 99,281,754
Limited partner units (in shares) 90 90
Tax Depreciation Deduction | Advisor    
Related Party Transaction [Line Items]    
Excess depreciation deductions maximum $ 10,000,000  
American Realty Capital Healthcare II Special Limited Partnership, LLC | Special Limited Partner    
Related Party Transaction [Line Items]    
Common stock, shares outstanding (in shares) 9,676 9,537