Quarterly report pursuant to Section 13 or 15(d)

Real Estate Facilities (Narrative) (Details)

v3.19.3
Real Estate Facilities (Narrative) (Details)
$ in Thousands
9 Months Ended
Oct. 01, 2019
USD ($)
ft²
Sep. 05, 2019
USD ($)
ft²
Apr. 18, 2019
USD ($)
ft²
Jun. 08, 2018
USD ($)
ft²
item
Apr. 30, 2018
USD ($)
ft²
item
Apr. 18, 2018
USD ($)
ft²
item
Mar. 05, 2018
USD ($)
ft²
item
Sep. 30, 2019
USD ($)
a
ft²
property
Sep. 30, 2018
USD ($)
Real Estate Facilities [Line Items]                  
Purchase price               $ 118,154 $ 143,766
Number of units in multi-family asset | property               395  
Number of acres | a               5  
Area of real estate property (in square feet) | ft²               628,000  
Proceeds from sale of real estate facilities                 126,836
Gain on sale of real estate facilities                 $ 85,283
Committed transaction costs for executed leases               $ 10,300  
Santa Fe Springs Acquisition [Member]                  
Real Estate Facilities [Line Items]                  
Number of square foot acquired | ft²   543,000              
Purchase price   $ 104,300              
Signal Hill Acquisition [Member]                  
Real Estate Facilities [Line Items]                  
Number of square foot acquired | ft²     74,000            
Purchase price     $ 13,800            
Multi-Tenant Industrial Park Acquisition [Member]                  
Real Estate Facilities [Line Items]                  
Number of square foot acquired | ft²       1,100,000          
Purchase price       $ 143,800          
Number of buildings acquired | item       2          
JV Partner [Member]                  
Real Estate Facilities [Line Items]                  
Consolidated entity ownership percentage               5.00%  
Rockville and Silver Spring, Maryland [Member] | Subsequent Event [Member]                  
Real Estate Facilities [Line Items]                  
Area of real estate property (in square feet) | ft² 1,300,000                
Gross proceeds from the sale of real estate facilities $ 148,800                
Corporate Pointe [Member]                  
Real Estate Facilities [Line Items]                  
Area of real estate property (in square feet) | ft²             161,000    
Number of buildings disposed | item             5    
Proceeds from sale of real estate facilities             $ 41,700    
Gain on sale of real estate facilities             $ 26,800    
Orange County Business Center [Member]                  
Real Estate Facilities [Line Items]                  
Area of real estate property (in square feet) | ft²           437,000      
Number of buildings disposed | item           5      
Proceeds from sale of real estate facilities           $ 73,300      
Gain on sale of real estate facilities           $ 50,600      
Northgate Business Park [Member]                  
Real Estate Facilities [Line Items]                  
Area of real estate property (in square feet) | ft²         194,000        
Number of buildings disposed | item         7        
Proceeds from sale of real estate facilities         $ 11,800        
Gain on sale of real estate facilities         $ 7,900        
Investment in Consolidated Joint Venture [Member]                  
Real Estate Facilities [Line Items]                  
Consolidated entity ownership percentage               95.00%