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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2019
Fair Value Disclosures [Abstract] |
Schedule of aggregate fair value and the aggregate unpaid principal balance for loans held for sale measured at fair value | The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for loans held for sale measured at fair value as of June 30, 2019 and December 31, 2018.
|  | June 30, 2019 |
(dollars in thousands) |  | Fair Value |  |  | Aggregate Unpaid Principal Balance |  |  | Difference |
Residential mortgage loans held for sale |  | $ | 37,506 |  |  | $ | 36,638 |  |  | $ | 868 |
FHA mortgage loans held for sale |  | $ | — |  |  | $ | — |  |  | $ | — |
|  | December 31, 2018 |
(dollars in thousands) |  | Fair Value |  |  | Aggregate Unpaid Principal Balance |  |  | Difference |
Residential mortgage loans held for sale |  | $ | 19,254 |  |  | $ | 18,797 |  |  | $ | 457 |
FHA mortgage loans held for sale |  | $ | — |  |  | $ | — |  |  | $ | — |
Schedule of the reconciliation of activity for assets and liabilities measured at fair value based on Significant Other Unobservable Inputs (Level 3) | The following is a reconciliation of activity for assets and liabilities measured at fair value based on Significant Other Unobservable Inputs (Level 3):
(dollars in thousands) |  | Investment Securities |  |  | Mortgage Banking Derivatives |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at January 1, 2019 |  | $ | 9,794 |  |  | $ | 229 |  |  | $ | 10,023 |
Realized gain included in earnings |  |  | — |  |  |  | 158 |  |  |  | 158 |
Unrealized loss included in other comprehensive income |  |  | — |  |  |  | — |  |  |  | — |
Principal redemption |  |  | (3,004 | ) |  |  | — |  |  |  | (3,004 | )
Ending balance at June 30, 2019 |  | $ | 6,790 |  |  | $ | 387 |  |  | $ | 7,177 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at January 1, 2019 |  | $ | — |  |  | $ | 269 |  |  | $ | 269 |
Realized gain included in earnings |  |  | — |  |  |  | 40 |  |  |  | 40 |
Principal redemption |  |  | — |  |  |  | — |  |  |  | — |
Ending balance at June 30, 2019 |  | $ | — |  |  | $ | 309 |  |  | $ | 309 |
(dollars in thousands) |  | Investment Securities |  |  | Mortgage Banking Derivatives |  |  | Total |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at January 1, 2018 |  | $ | 1,718 |  |  | $ | 43 |  |  | $ | 1,761 |
Realized gain included in earnings |  |  | — |  |  |  | 186 |  |  |  | 186 |
Purchases of available-for-sale securities |  |  | 8,076 |  |  |  | — |  |  |  | 8,076 |
Principal redemption |  |  | — |  |  |  | — |  |  |  | — |
Ending balance at December 31, 2018 |  | $ | 9,794 |  |  | $ | 229 |  |  | $ | 10,023 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance at January 1, 2018 |  | $ | — |  |  | $ | 10 |  |  | $ | 10 |
Realized loss included in earnings |  |  | — |  |  |  | 259 |  |  |  | 259 |
Principal redemption |  |  | — |  |  |  | — |  |  |  | — |
Ending balance at December 31, 2018 |  | $ | — |  |  | $ | 269 |  |  | $ | 269 |

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- Definition Tabular disclosure for aggregate fari value and unpaid principal balance for loans held for sale. + References No definition available. + Details
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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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