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GENERAL (Business Acquisition) (Details)
€ in Thousands, $ in Thousands
12 Months Ended
Feb. 11, 2020
USD ($)
Feb. 11, 2020
EUR (€)
Jun. 17, 2016
USD ($)
Dec. 29, 2015
USD ($)
Jul. 08, 2015
USD ($)
Jul. 08, 2015
EUR (€)
Jun. 02, 2015
USD ($)
Jun. 02, 2015
EUR (€)
Dec. 31, 2015
USD ($)
Dec. 31, 2015
EUR (€)
Dec. 31, 2019
USD ($)
Business Acquisition [Line Items]                      
Property held for sale                     $ 29,700
Power Purchase Agreement [Member]                      
Business Acquisition [Line Items]                      
Property held for sale                     $ 157
300 South Riverside Plaza [Member]                      
Business Acquisition [Line Items]                      
Payment for acquisition     $ 3,000 $ 12,900              
Acquisition costs       $ 242              
Interest percentage in joint venture       30.00%              
Interest rate percentage for additional investment     12.00%                
Retail Portfolio In Germany [Member]                      
Business Acquisition [Line Items]                      
Square footage of real estate property acquired | m²             37,000 37,000      
Payment for acquisition $ 38,900       $ 5,224   $ 26,249        
Acquisition costs, including real estate taxes                 $ 2,352    
Retail Portfolio In Germany [Member] | Euro [Member]                      
Business Acquisition [Line Items]                      
Payment for acquisition | €   € 35,000       € 4,750   € 24,000      
Acquisition costs, including real estate taxes | €                   € 2,075