Concentration of Credit Risk	3 Months Ended
Concentration of Credit Risk	Mar. 31, 2021
Concentration of Credit Risk [Abstract]
Concentration of Credit Risk	19. Concentration of Credit Risk Financial instruments that potentially subject us to a concentration of credit risk are primarily our debt security investment, cash and cash equivalents, accounts and other receivables and restricted cash. We are exposed to credit risk with respect to our debt security investment, but we believe collection of the outstanding amount is probable. Cash and cash equivalents are generally invested in investment-grade, short-term instruments with a maturity of three months or less when purchased. We have cash and cash equivalents in financial institutions that are insured by the Federal Deposit Insurance Corporation, or FDIC. As of March 31, 2021 and December 31, 2020, we had cash and cash equivalents in excess of FDIC insured limits. We believe this risk is not significant. Concentration of credit risk with respect to accounts receivable from tenants is limited. We perform credit evaluations of prospective tenants and security deposits are obtained at the time of property acquisition and upon lease execution. Based on leases in effect as of March 31, 2021, properties in one state in the United States accounted for 10.0% or more of our total property portfolio’s annualized base rent or annualized NOI. Properties located in Indiana accounted for 39.7% of our total property portfolio’s annualized base rent or annualized NOI. Accordingly, there is a geographic concentration of risk subject to fluctuations in such state’s economy. Based on leases in effect as of March 31, 2021, our six reportable business segments, integrated senior health campuses, medical office buildings, senior housing — RIDEA, skilled nursing facilities, hospitals and senior housing, accounted for 46.2%, 29.9%, 10.1%, 6.2%, 4.3% and 3.3%, respectively, of our total property portfolio’s annualized base rent or annualized NOI. As of March 31, 2021, none of our tenants at our properties accounted for 10.0% or more of our total property portfolio’s annualized base rent or annualized NOI, which is based on contractual base rent from leases in effect for our non-RIDEA properties and annualized NOI for our senior housing — RIDEA facilities and integrated senior health campuses operations as of March 31, 2021.

Griffin-American Healthcare REIT III, Inc. 10-Q