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Fair Value of Assets and Liabilities - Reconciliation of Assets with Unobservable Inputs (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | $ 7,165 | $ 5,182 | $ 5,294 | $ 3,168
Change included in earnings | (751) | (755) | (935) | (2,170)
Purchases and issuances | 5,092 | 6,763 | 14,030 | 18,511
Sales and settlements | (3,817) | (6,230) | (10,700) | (14,549)
Ending balance | 7,689 | 4,960 | 7,689 | 4,960
Net change in unrealized gains (losses) relating to items held at end of period | 1,508 | 1,764 | 1,508 | 1,764
Mortgage servicing rights |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 5,828 | 2,602 | 4,157 | 1,654
Change included in earnings | (296) | (166) | (62) | (523)
Purchases and issuances | 649 | 760 | 2,086 | 2,065
Sales and settlements | 0 | 0 | 0 | 0
Ending balance | 6,181 | 3,196 | 6,181 | 3,196
Net change in unrealized gains (losses) relating to items held at end of period | 0 | 0 | 0 | 0
Interest rate lock commitments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning balance | 1,337 | 2,580 | 1,137 | 1,514
Change included in earnings | (455) | (589) | (873) | (1,647)
Purchases and issuances | 4,443 | 6,003 | 11,944 | 16,446
Sales and settlements | (3,817) | (6,230) | (10,700) | (14,549)
Ending balance | 1,508 | 1,764 | 1,508 | 1,764
Net change in unrealized gains (losses) relating to items held at end of period | $ 1,508 | $ 1,764 | $ 1,508 | $ 1,764

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and Issuances + References No definition available. + Details
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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales and Settlements + References No definition available. + Details
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- Definition Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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