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Mortgage Servicing Rights (Tables)
3 Months Ended
Mar. 31, 2022
Transfers and Servicing [Abstract]  
Changes in the company's MSRs
Changes in the Company’s MSRs were as follows: 
Balance at January 1, 2022$89,018 
Capitalization6,603 
Amortization(3,891)
Balance at March 31, 2022$91,730 
Data and key economic assumptions related to the Company's MSRs
Data and key economic assumptions related to the Company’s MSRs are as follows as of the dates presented:
 
March 31, 2022December 31, 2021
Unpaid principal balance$8,931,901 $8,728,629 
Weighted-average prepayment speed (CPR)6.71 %10.56 %
Estimated impact of a 10% increase$(5,883)$(3,875)
Estimated impact of a 20% increase(11,291)(7,464)
Discount rate9.68 %9.82 %
Estimated impact of a 10% increase$(1,477)$(4,153)
Estimated impact of a 20% increase(3,264)(8,119)
Weighted-average coupon interest rate3.27 %3.29 %
Weighted-average servicing fee (basis points)30.47 30.37 
Weighted-average remaining maturity (in years)8.466.69