Commitments And Contingencies (Narrative) (Details) $ in Thousands		3 Months Ended
	May 01, 2019 USD ($) a	Mar. 31, 2019 USD ($) a	May 01, 2019 contract	May 01, 2019 customer	May 01, 2019 property	May 01, 2019 letter	May 01, 2019 ft²	Mar. 31, 2019 property	Mar. 31, 2019 ft²
Third-Party Seller [Member]
Other Commitments [Line Items]
Number of buildings								2
Area of real estate property | ft²									116,600
Asset acquisition, assets acquired and liabilities assumed, net | $		$ 52,100
Third-Party Seller [Member] | Subsequent event [Member]
Other Commitments [Line Items]
Outstanding contracts with a third-party | contract			2
Los Angeles [Member] | Third-Party Seller [Member]
Other Commitments [Line Items]
Number of buildings								0
Area of real estate property | ft²									0
Asset acquisition, assets acquired and liabilities assumed, net | $		0
Miami [Member] | Third-Party Seller [Member]
Other Commitments [Line Items]
Number of buildings								0
Area of real estate property | ft²									0
Asset acquisition, assets acquired and liabilities assumed, net | $		$ 0
Industrial building [Member] | Third-Party Seller [Member] | Subsequent event [Member]
Other Commitments [Line Items]
Number of buildings					2
Area of real estate property | ft²							117,000
Industrial building [Member] | Third-party seller, non-binding letter [Member] | Subsequent event [Member]
Other Commitments [Line Items]
Area of real estate property | ft²							207,000
Asset acquisition, assets acquired and liabilities assumed, net | $	$ 83,400
Improved land parcels [Member]
Other Commitments [Line Items]
Number of buildings								18
Area of real estate property		2.0							12,900,000
Improved land parcels [Member] | Third-Party Seller [Member] | Subsequent event [Member]
Other Commitments [Line Items]
Number of buildings					1
Area of real estate property | a	2.0
Redevelopment property [Member] | Subsequent event [Member]
Other Commitments [Line Items]
Number of buildings				2		2