Investments in Real Estate Partnerships - Balance Sheet Summarized Financial Information (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net		$ 2,917,415	$ 3,001,481
Acquired lease intangible assets, net		40,549	57,053
Other assets		200,920	169,297
Total assets		3,158,884	3,227,831
Notes payable		1,577,467	1,609,647
Acquired lease intangible liabilities, net		44,387	49,501
Other liabilities		96,388	90,577
Capital - Regency		508,875	498,852
Capital - Third parties		931,767	979,254
Total liabilities and capital		3,158,884	3,227,831
Investments in real estate partnerships (note 4)		469,522	463,001
US Regency Retail 1, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Total assets	[1]	87,231	89,524
Investments in real estate partnerships (note 4)	[1]	0	0
Other Liabilities [Member] | US Regency Retail 1, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate partnerships (note 4)	[2]	3,943	3,513
Basis Difference [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity		$ (43,296)	$ (39,364)

[1] The USAA partnership has distributed proceeds from debt refinancing and real estate sales in excess of Regency’s carrying value of its investment resulting in a negative investment balance of $3.9 million, which is recorded within Accounts Payable and other liabilities in the Consolidated Balance Sheets.

[2] ^{The USAA partnership has distributed proceeds from debt refinancing and real estate sales in excess of Regency's carrying value of its investment resulting in a negative investment balance, which is recorded within Accounts payable and other liabilities in the Consolidated Balance Sheets.}