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Goodwill, Intangible Assets, and Servicing Assets (Tables) | 3 Months Ended
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Mar. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets | The following table provides information regarding the core deposit intangibles at March 31, 2017:
|  |  | As of March 31, 2017
| Amortization period |  | Gross Carrying Amount |  | Accumulated Amortization
|  |  | (Dollars in thousands)
Core deposit—Center Financial acquisition | 7 years |  | $ | 4,100 |  |  | $ | (3,755 | )
Core deposit—PIB acquisition | 7 years |  | 604 |  |  | (484 | )
Core deposit—Foster acquisition | 10 years |  | 2,763 |  |  | (1,417 | )
Core deposit—Wilshire acquisition | 10 years |  | 18,138 |  |  | (1,399 | )
Total |  |  | $ | 25,605 |  |  | $ | (7,055 | )
Schedule of Servicing Assets | The changes in servicing assets for the three months ended March 31, 2017 and 2016 were as follows:
|  | Three Months Ended March 31,
|  | 2017 |  | 2016
|  | (Dollars in thousands)
Balance at beginning of period |  | $ | 26,457 |  |  | $ | 12,000 |
Additions through originations of servicing assets |  | 1,296 |  |  | 777 |
Amortization |  | (1,812 | ) |  | (921 | )
Balance at end of period |  | $ | 25,941 |  |  | $ | 11,856 |
Summary of Fair Value Inputs | The inputs used in determining the impairment of the servicing assets at March 31, 2017 and December 31, 2016 are presented below.
|  | March 31, 2017 |  | December 31, 2016
SBA Servicing Assets: |  |  |  |
Weighted-average discount rate |  | 10.29% |  | 9.85%
Constant prepayment rate |  | 8.18% |  | 8.05%
Mortgage Servicing Assets: |  |  |  |
Weighted-average discount rate |  | 9.66% |  | 7.25%
Constant prepayment rate |  | 7.71% |  | 13.77%

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- Definition Tabular disclosure of quantitative information about the inputs used in the fair value measurement of assets. This disclosure may include, but is not limited to, the fair value of the asset, valuation technique used to measure fair value, the inputs used to measure fair value, the ranges of the inputs, and the weighted averages of the inputs. + 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 (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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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