THE MACERICH COMPANY
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)
(Dollars in thousands, except per share and square foot amounts)
9. Mortgage Notes Payable: (Continued)
The loan bears interest at LIBOR plus 1.35%. The loan is covered by an interest rate cap agreement that effectively prevents LIBOR from exceeding 4.0% during the period ending December 9, 2019 (See Note 5—Derivative Instruments and Hedging Activities). At September 30, 2018 and December 31, 2017, the total interest rate was 3.76% and 3.13%, respectively.
On August 31, 2018, a 75% interest in the loan was assumed by a third party in connection with the sale of a 75% ownership interest in the underlying property (See Note 4—Investments in Unconsolidated Joint Ventures).
Most of the mortgage loan agreements contain a prepayment penalty provision for the early extinguishment of the debt.
The Company's mortgage notes payable are secured by the properties on which they are placed and are non-recourse to the Company.
The Company expects that all loan maturities during the next twelve months will be refinanced, restructured, extended and/or paid-off from the Company's line of credit or with cash on hand.
Total interest expense capitalized was $3,751 and $3,428 for the three months ended September 30, 2018 and 2017, respectively, and $12,752 and $9,405 for the nine months ended September 30, 2018 and 2017, respectively.
Related party mortgage notes payable are amounts due to an affiliate of NML. See Note 17—Related Party Transactions for interest expense associated with loans from NML.
The estimated fair value (Level 2 measurement) of mortgage notes payable at September 30, 2018 and December 31, 2017 was $4,088,227 and $4,250,816, respectively, based on current interest rates for comparable loans. Fair value was determined using a present value model and an interest rate that included a credit value adjustment based on the estimated value of the property that serves as collateral for the underlying debt.