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Goodwill, Core Deposit Intangible and Other Intangible Assets | 9 Months Ended
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Sep. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill, Core Deposit Intangible and Other Intangible Assets | Note 9—Goodwill, Core Deposit Intangible and Other Intangible Assets The following tables summarize the changes in the Company’s goodwill, core deposit intangible assets, and customer relationship intangible assets for the three and nine months ended September 30, 2020 and 2019:
|  | For the Three Months Ended September 30, |
|  | 2020 |  |  | 2019 |
|  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |  |  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |
Beginning balance |  | $ | 148,353 |  |  | $ | 25,459 |  |  | $ | 2,658 |  |  | $ | 145,638 |  |  | $ | 32,982 |  |  | $ | 2,926 |
Amortization |  |  | — |  |  |  | (1,825 | ) |  |  | (122 | ) |  |  | — |  |  |  | (1,936 | ) |  |  | (67 | )
Ending balance |  | $ | 148,353 |  |  | $ | 23,634 |  |  | $ | 2,536 |  |  | $ | 145,638 |  |  | $ | 31,046 |  |  | $ | 2,859 |
Accumulated amortization |  | N/A |  |  | $ | 31,832 |  |  | $ | 680 |  |  | N/A |  |  | $ | 24,420 |  |  | 358 |
Weighted average remaining amortization period |  | N/A |  |  | 5.8 Years |  |  | 9.7 Years |  |  | N/A |  |  | 6.7 Years |  |  | 10.7 Years |
|  | Nine Months Ended September 30, |
|  | 2020 |  |  | 2019 |
|  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |  |  | Goodwill |  |  | Core Deposit Intangible |  |  | Customer Relationship Intangible |
Beginning balance |  | $ | 148,353 |  |  | $ | 29,111 |  |  | $ | 2,791 |  |  | $ | 128,177 |  |  | $ | 30,360 |  |  | $ | 3,059 |
Additions |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 17,461 |  |  |  | 6,220 |  |  |  | — |
Amortization |  |  | — |  |  |  | (5,477 | ) |  |  | (255 | ) |  |  | — |  |  |  | (5,534 | ) |  |  | (200 | )
Ending balance |  | $ | 148,353 |  |  | $ | 23,634 |  |  | $ | 2,536 |  |  | $ | 145,638 |  |  | $ | 31,046 |  |  | $ | 2,859 |
Accumulated amortization |  | N/A |  |  | $ | 31,832 |  |  | $ | 680 |  |  | N/A |  |  | $ | 24,420 |  |  | 358 |
Weighted average remaining amortization period |  | N/A |  |  | 5.8 Years |  |  | 9.7 Years |  |  | N/A |  |  | 6.7 Years |  |  | 10.7 Years |
The Company added additional goodwill and core deposit intangible assets in conjunction with the Oak Park River Forest acquisition. Please refer to Note 3—Acquisition for further details. The following table presents the estimated amortization expense for core deposit intangible and customer relationship intangible assets remaining at September 30, 2020:
|  | Estimated Amortization |
2020 |  | $ | 1,894 |
2021 |  |  | 6,998 |
2022 |  |  | 6,426 |
2023 |  |  | 4,370 |
2024 |  |  | 2,286 |
Thereafter |  |  | 4,196 |
Total |  | $ | 26,170 |

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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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