Real Estate (Schedule of Transactions Related to Assets Sold in Discontinued Operations (Details) - Discontinued Operations [Member]	Jul. 07, 2022
Academy Plaza [Member]
Real Estate Properties [Line Items]
Location	Philadelphia, PA
Bethel Shopping Center [Member]
Real Estate Properties [Line Items]
Location	Bethel, CT
Carmans Plaza [Member]
Real Estate Properties [Line Items]
Location	Massapequa, NY
Christina Crossing [Member]
Real Estate Properties [Line Items]
Location	Wilmington, DE
Colonial Commons [Member]
Real Estate Properties [Line Items]
Location	Harrisburg, PA
Crossroads II [Member]
Real Estate Properties [Line Items]
Location	Bartonsville, PA
East River Park [Member]
Real Estate Properties [Line Items]
Location	Washington, DC
Elmhurst Square [Member]
Real Estate Properties [Line Items]
Location	Portsmouth, VA
Fishtown Crossing [Member]
Real Estate Properties [Line Items]
Location	Philadelphia, PA
Franklin Village Plaza [Member]
Real Estate Properties [Line Items]
Location	Franklin, MA
General Booth Plaza [Member]
Real Estate Properties [Line Items]
Location	Virginia Beach, VA
Girard Plaza [Member]
Real Estate Properties [Line Items]
Location	Philadelphia, PA
Groton Shopping Center [Member]
Real Estate Properties [Line Items]
Location	Groton, CT
Halifax Plaza [Member]
Real Estate Properties [Line Items]
Location	Halifax, PA
Jordan Lane [Member]
Real Estate Properties [Line Items]
Location	Wethersfield, PA
Kempsville Crossing [Member]
Real Estate Properties [Line Items]
Location	Virginia Beach, VA
Lawndale Plaza [Member]
Real Estate Properties [Line Items]
Location	Philadelphia, PA
Meadows Marketplace [Member]
Real Estate Properties [Line Items]
Location	Hummelstown, PA
New London Mall [Member]
Real Estate Properties [Line Items]
Location	New London, CT
Newport Plaza [Member]
Real Estate Properties [Line Items]
Location	Newport, PA
Northside Commons [Member]
Real Estate Properties [Line Items]
Location	Campbelltown, PA
Norwood Shopping Center [Member]
Real Estate Properties [Line Items]
Location	Norwood, MA
Oak Ridge Shopping Center [Member]
Real Estate Properties [Line Items]
Location	Suffolk, VA
Oakland Mills [Member]
Real Estate Properties [Line Items]
Location	Columbia, MD
Palmyra Shopping Center [Member]
Real Estate Properties [Line Items]
Location	Palmyra, PA
Quartermaster Plaza [Member]
Real Estate Properties [Line Items]
Location	Philadelphia, PA
Senator Square [Member]
Real Estate Properties [Line Items]
Location	Washington, DC
Shoppes at Arts District [Member]
Real Estate Properties [Line Items]
Location	Hyattsville, MD
Swede Square [Member]
Real Estate Properties [Line Items]
Location	E. Norriton Township, PA
The Point [Member]
Real Estate Properties [Line Items]
Location	Harrisburg, PA
The Shops as Bloomfield Station [Member]
Real Estate Properties [Line Items]
Location	Bloomfield, NJ
The Shops at Suffolk Downs [Member]
Real Estate Properties [Line Items]
Location	Revere, MA
Trexlertown Plaza [Member]
Real Estate Properties [Line Items]
Location	Trexlertown, PA
Valley Plaza [Member]
Real Estate Properties [Line Items]
Location	Hagerstown, MD
Yorktowne Plaza [Member]
Real Estate Properties [Line Items]
Location	Cockeysville, MD