Annual report pursuant to Section 13 and 15(d)

Disclosure Of Fair Value Of Assets And Liabilities (Schedule Of Valuation Techniques And Significant Unobservable Assumptions) (Details)

v3.20.4
Disclosure Of Fair Value Of Assets And Liabilities (Schedule Of Valuation Techniques And Significant Unobservable Assumptions) (Details) - Level 3 [Member]
$ in Thousands
Dec. 31, 2020
USD ($)
Measurement Assumptions, Discount Rates [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Hotel properties 10
Measurement Assumptions, Exit Capitalization Rates [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Hotel properties 7.5
Measurement Assumptions, Market Rental Rates Per Square Foot [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Land properties held for sale 12.00
Minimum [Member] | Measurement Assumptions, Discount Rates [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Office properties held for sale 7.5
Minimum [Member] | Measurement Assumptions, Exit Capitalization Rates [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Office properties held for sale 7.5
Minimum [Member] | Measurement Assumptions, Market Rental Rates Per Square Foot [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Office properties held for sale 27.50
Minimum [Member] | Measurement Assumptions, Market Rates Per Residential Unit [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Land held for sale, fair value $ 32,000
Maximum [Member] | Measurement Assumptions, Discount Rates [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Office properties held for sale 10
Maximum [Member] | Measurement Assumptions, Exit Capitalization Rates [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Office properties held for sale 9
Maximum [Member] | Measurement Assumptions, Market Rental Rates Per Square Foot [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Office properties held for sale 37.00
Maximum [Member] | Measurement Assumptions, Market Rates Per Residential Unit [Member]  
Fair Value Measurement Inputs and Valuation Techniques [Line Items]  
Land held for sale, fair value $ 40,000