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Mortgage Servicing Rights (Tables) | 9 Months Ended
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Sep. 30, 2017
Mortgage Servicing Rights [Abstract] |
Summary of mortgage servicing rights capitalized and related amortization |
($ in thousands) |  | 2017 |  |  | 2016 |
Carrying amount, January 1 |  | $ | 8,422 |  |  | $ | 7,152 |
Mortgage servicing rights capitalized during the year |  |  | 2,042 |  |  |  | 1,779 |
Mortgage servicing rights amortization during the year |  |  | (864 | ) |  |  | (879 | )
Net change in valuation allowance |  |  | (40 | ) |  |  | (1,165 | )
Carrying amount, September 30 |  | $ | 9,560 |  |  | $ | 6,887 |
Valuation allowance: |  |  |  |  |  |  |  |
January 1 |  | $ | 228 |  |  | $ | 296 |
Increase/(reduction) |  |  | 40 |  |  |  | 1,165 |
September 30 |  | $ | 268 |  |  | $ | 1,461 |

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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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