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Mortgage Servicing Rights (Tables) | 3 Months Ended
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Mar. 31, 2018
Mortgage Servicing Rights [Abstract] |
Summary of mortgage servicing rights capitalized and related amortization |
($ in thousands) |  | 2018 |  |  | 2017 |
Carrying amount, January 1 |  | $ | 9,907 |  |  | $ | 8,422 |
Mortgage servicing rights capitalized during the year |  |  | 502 |  |  |  | 488 |
Mortgage servicing rights amortization during the year |  |  | (246 | ) |  |  | (218 | )
Net change in valuation allowance |  |  | 92 |  |  |  | 35 |
Carrying amount, March 31 |  | $ | 10,255 |  |  | $ | 8,727 |
Valuation allowance: |  |  |  |  |  |  |  |
January 1 |  | $ | 151 |  |  | $ | 228 |
Increase/(reduction) |  |  | (92 | ) |  |  | (35 | )
March 31 |  | $ | 59 |  |  | $ | 193 |

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- Definition Mortgage servicing rights. + References No definition available. + 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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