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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2017
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 June 30, 2017 |
|  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |
Core deposit intangible assets |  | $ | 2,067 |  |  | $ | (1,262 | ) |  | $ | 805 |
Lease intangible asset |  |  | 350 |  |  |  | (166 | ) |  |  | 184 |
Mortgage servicing rights |  |  | 6,029 |  |  |  | (3,216 | ) |  |  | 2,813 |
Total other intangible assets |  | $ | 8,446 |  |  | $ | (4,644 | ) |  | $ | 3,802 |
(Dollars in thousands) |  | As of December 31, 2016 |
|  | Gross carrying amount |  |  | Accumulated amortization |  |  | Net carrying amount |
Core deposit intangible assets |  | $ | 2,067 |  |  | $ | (1,137 | ) |  | $ | 930 |
Lease intangible asset |  |  | 350 |  |  |  | (143 | ) |  |  | 207 |
Mortgage servicing rights |  |  | 5,788 |  |  |  | (2,939 | ) |  |  | 2,849 |
Total other intangible assets |  | $ | 8,205 |  |  | $ | (4,219 | ) |  | $ | 3,986 |
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 2017 and in successive years ending December 31:
(Dollars in thousands) |  | Amortization |
|  | expense |
Remainder of 2017 |  | $ | 141 |
2018 |  |  | 252 |
2019 |  |  | 214 |
2020 |  |  | 177 |
2021 |  |  | 121 |
Thereafter |  |  | 84 |
Total |  | $ | 989 |
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) |  | June 30, 2017 |  |  | December 31, 2016 |
FHLMC |  | $ | 500,399 |  |  | $ | 483,356 |
FHLB |  |  | 10,444 |  |  |  | 11,393 |
Total |  | $ | 510,843 |  |  | $ | 494,749 |
Schedule of Servicing Asset at Amortized Cost | Activity for mortgage servicing rights and the related valuation allowance follows:
(Dollars in thousands) |  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Mortgage servicing rights: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | 2,787 |  |  | $ | 2,808 |  |  | $ | 2,849 |  |  | $ | 2,840 |
Additions |  |  | 281 |  |  |  | 291 |  |  |  | 442 |  |  |  | 512 |
Amortization |  |  | (255 | ) |  |  | (248 | ) |  |  | (478 | ) |  |  | (501 | )
Balance at end of period |  | $ | 2,813 |  |  | $ | 2,851 |  |  | $ | 2,813 |  |  | $ | 2,851 |

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- Definition Tabular disclosure of the terms and amounts of participation in loan arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=29639217&loc=d3e10013-112621 + Details
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- Definition Tabular disclosure of activity in the balance of servicing assets subsequently measured at amortized cost. Includes, but is not limited to, beginning and ending balances, additions, disposals, and amortization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122739-111746 + Details
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