Concentration of Credit Risk	12 Months Ended
Dec. 31, 2020
Risks And Uncertainties [Abstract]
Concentration of Credit Risk	Note 5. Concentration of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents in excess of insured amounts and tenant receivables. The Company places its cash and cash equivalents with high quality financial institutions. Management performs ongoing credit evaluations of its tenants and requires certain tenants to provide security deposits and/or suitable guarantees. Excluding properties held for sale and sold, Giant Food Stores, LLC, Stop & Shop, Inc. and Food Lion, LLC, each of which is owned by Ahold N.V., a Netherlands corporation, accounted for an aggregate of approximately 13%, 12% and 11% of the Company’s total revenues during 2020, 2019 and 2018, respectively. The Company’s properties are located largely in the region straddling the Washington, D.C. to Boston corridor, which exposes it to greater economic risks than if the properties it owned were located in a greater number of geographic regions (in particular, 23 of the Company’s properties are located in Pennsylvania).

Concentration of Credit Risk

12 Months Ended

Dec. 31, 2020

Note 5. Concentration of Credit Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents in excess of insured amounts and tenant receivables. The Company places its cash and cash equivalents with high quality financial institutions. Management performs ongoing credit evaluations of its tenants and requires certain tenants to provide security deposits and/or suitable guarantees.

Excluding properties held for sale and sold, Giant Food Stores, LLC, Stop & Shop, Inc. and Food Lion, LLC, each of which is owned by Ahold N.V., a Netherlands corporation, accounted for an aggregate of approximately 13%, 12% and 11% of the Company’s total revenues during 2020, 2019 and 2018, respectively.

The Company’s properties are located largely in the region straddling the Washington, D.C. to Boston corridor, which exposes it to greater economic risks than if the properties it owned were located in a greater number of geographic regions (in particular, 23 of the Company’s properties are located in Pennsylvania).