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Goodwill and Other Intangible Assets (Tables)
 3 Months Ended
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Other Intangible Assets and Goodwill

A summary of the other intangible assets that continue to be subject to amortization was as follows:

 

(Dollars in thousands)   As of March 31, 2020  
    Gross carrying amount     Accumulated amortization     Net carrying amount  
Core deposit intangible assets   $ 2,018     $ (1,742 )   $ 276  
Lease intangible asset     350       (290 )     60  
Mortgage servicing rights     7,000       (4,572 )     2,428  
Total other intangible assets   $ 9,368     $ (6,604 )   $ 2,764  

 

(Dollars in thousands)   As of December 31, 2019  
    Gross carrying amount     Accumulated amortization     Net carrying amount  
Core deposit intangible assets   $ 2,018     $ (1,707 )   $ 311  
Lease intangible asset     350       (278 )     72  
Mortgage servicing rights     6,910       (4,464 )     2,446  
Total other intangible assets   $ 9,278     $ (6,449 )   $ 2,829  
Schedule of Finite-lived Intangible Assets, Future Amortization Expense

The following sets forth estimated amortization expense for core deposit and lease intangible assets for the remainder of 2020 and in successive years ending December 31:

 

(Dollars in thousands)   Amortization  
    expense  
Remainder of 2020   $ 131  
2021     121  
2022     58  
2023     26  
Total   $ 336  
Schedule of Participating Mortgage Loans

Mortgage loans serviced for others are not reported as assets. The following table provides information on the principal balances of mortgage loans serviced for others:

 

(Dollars in thousands)   March 31,     December 31,  
    2020     2019  
FHLMC   $ 511,759     $ 509,101  
FHLB     42,155       40,462  
Total   $ 553,914     $ 549,563  
Schedule of Servicing Asset at Amortized Cost

Activity for mortgage servicing rights was as follows:

 

    Three months ended  
(Dollars in thousands)   March 31,  
    2020     2019  
Mortgage servicing rights:                
Balance at beginning of period   $ 2,446     $ 2,495  
Additions     212       97  
Amortization     (230 )     (208 )
Balance at end of period   $ 2,428     $ 2,384