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Goodwill and Other Intangibles | 12 Months Ended
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Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangibles | Goodwill and Other Intangible Assets The following table shows the activity in goodwill and other intangible assets for the year ended December 31, 2018.
(in thousands) |  | Goodwill |  | Other Intangible Assets |  | Total
December 31, 2017 |  | $ | 72,334 |  |  | $ | — |  |  | $ | 72,334 |
Acquired goodwill and other intangible assets |  | 40,405 |  |  | 7,549 |  |  | 47,954 |
Amortization |  | — |  |  | 578 |  |  | 578 |
December 31, 2018 |  | $ | 112,739 |  |  | $ | 6,971 |  |  | $ | 119,710 |
Goodwill impairment exists when a reporting unit's carrying value exceeds its fair value. At April 1, 2018, the Company's reporting unit, PNB, had positive equity and the Company elected to perform a qualitative assessment to determine if it was more likely than not that the fair value of the reporting unit exceeded its carrying value, including goodwill. The qualitative assessment indicated that it was more likely than not that the fair value of the reporting unit exceeded its carrying value, resulting in no impairment. There have been no subsequent circumstances or events triggering an additional evaluation. Acquired Intangible Assets The following table shows the balance of acquired intangible assets as of December 31, 2018. Park had no acquired intangible assets as of December 31, 2017.
|  | 2018
(in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization
Other intangible assets: |  |  |  |
Core deposit intangibles |  | $ | 6,249 |  |  | $ | 578 |
Trade name intangible |  | 1,300 |  |  | — |
Total |  | $ | 7,549 |  |  | $ | 578 |
Core deposit intangibles are being amortized, on an accelerated basis, over a period of ten years. The trade name intangible is an indefinite life asset and is not amortized, but rather is assessed, at least annually, for impairment. Amortization expense was $578,000 for the year ended December 31, 2018. There was no amortization expense during 2017. The following is a schedule of estimated amortization expense for each of the next five years:
(in thousands) |  | Total
2019 |  | $ | 1,234 |
2020 |  | 1,149 |
2021 |  | 869 |
2022 |  | 629 |
2023 |  | 521 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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