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Goodwill and Other Intangible Assets (Tables)
 3 Months Ended
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Intangible Assets and Goodwill

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

 

(Dollars in thousands)   As of March 31, 2019  
    Gross carrying amount     Accumulated amortization     Net carrying amount  
Core deposit intangible assets   $ 2,067     $ (1,632 )   $ 435  
Lease intangible asset     350       (244 )     106  
Mortgage servicing rights     6,573       (4,189 )     2,384  
Total other intangible assets   $ 8,990     $ (6,065 )   $ 2,925  

 

(Dollars in thousands)     As of December 31, 2018  
      Gross carrying amount       Accumulated amortization       Net carrying amount  
Core deposit intangible assets   $ 2,067     $ (1,588 )   $ 479  
Lease intangible asset     350       (233 )     117  
Mortgage servicing rights     6,545       (4,050 )     2,495  
Total other intangible assets   $ 8,962     $ (5,871 )   $ 3,091  
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 2019 and in successive years ending December 31:

 

(Dollars in thousands)  

Amortization

expense

  
Remainder of 2019   $ 159  
2020     177  
2021     121  
2022     58  
2023     26  
Total   $ 541  
Schedule of Participating Mortgage Loans

The following table provides information on the principal balances of mortgage loans serviced for others:

 

(Dollars in thousands)   March 31,     December 31,  
    2019     2018  
FHLMC   $ 517,197     $ 521,489  
FHLB     12,079       10,603  
Total   $ 529,276     $ 532,092  
Schedule of Servicing Asset at Amortized Cost

Activity for mortgage servicing rights is as follows:

 

    Three months ended  
(Dollars in thousands)   March 31,  
    2019     2018  
Mortgage servicing rights:                
Balance at beginning of period   $ 2,495     $ 2,811  
Additions     97       122  
Amortization     (208 )     (211 )
Balance at end of period   $ 2,384     $ 2,722