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Income Taxes - Narrative (Details)
$ in Millions
9 Months Ended
Sep. 30, 2021
USD ($)
Operating Loss Carryforwards [Line Items]  
Operating loss carryforwards, no expiration $ 10.9
Operating loss carryforwards, subject to expiration 0.9
Change in valuation 4.5
Taxable REIT Subsidiaries  
Operating Loss Carryforwards [Line Items]  
Net operating loss carryforwards 11.8
Capital losses $ 22.0