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GOODWILL AND OTHER INTANGIBLE ASSETS, NET | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
GOODWILL AND OTHER INTANGIBLE ASSETS, NET | GOODWILL AND OTHER INTANGIBLE ASSETS, NET The following table presents changes in the carrying amount of goodwill for the periods indicated:
|  | Year Ended December 31,
($ in thousands) |  | 2021 |  | 2020 |  | 2019
Goodwill, beginning of the year |  | $ | 37,144 |  |  | $ | 37,144 |  |  | $ | 37,144 |
Goodwill from business combination |  | 57,157 |  |  | — |  |  | — |
Goodwill, end of year |  | $ | 94,301 |  |  | $ | 37,144 |  |  | $ | 37,144 |
Accumulated impairment losses at end of year |  | $ | 2,100 |  |  | $ | 2,100 |  |  | $ | 2,100 |
At December 31, 2021, we had goodwill of $94.3 million, which included $57.2 million in goodwill recognized in the PMB Acquisition (refer to Note 2 — Business Combinations), an increase from $37.1 million at December 31, 2020. Goodwill also included accumulated impairment losses of $2.1 million recognized in 2017 as a result of us discontinuing our mortgage banking division. There was no impairment of goodwill for the years ended December 31, 2021, 2020 and 2019. Intangible assets, net are comprised of core deposit intangibles acquired in business combinations. Core deposit intangibles are amortized over their useful lives of ten years. The following table presents changes in the carrying amount of intangible assets, net for the periods indicated:
|  | Year Ended December 31,
($ in thousands) |  | 2021 |  | 2020 |  | 2019
Core deposit intangibles: |  |  |  |  |  |
Balance, beginning of year |  | $ | 30,904 |  |  | $ | 30,904 |  |  | $ | 30,904 |
Core deposit intangibles acquired during the year |  | 5,054 |  |  | — |  |  | — |
Balance, end of year |  | 35,958 |  |  | 30,904 |  |  | 30,904 |
Accumulated amortization: |  |  |  |  |  |
Balance, beginning of year |  | 28,271 |  |  | 26,753 |  |  | 24,558 |
Amortization of intangible assets |  | 1,276 |  |  | 1,518 |  |  | 2,195 |
Balance, end of year |  | 29,547 |  |  | 28,271 |  |  | 26,753 |
Intangible assets, net |  | $ | 6,411 |  |  | $ | 2,633 |  |  | $ | 4,151 |
Core deposit intangibles are evaluated for impairment annually or whenever events occur or circumstances change indicating the carrying amount of the asset may not be recoverable, such as customer attrition. There was no impairment of core deposit intangibles for the years ended December 31, 2021, 2020 and 2019. As of December 31, 2021, the weighted-average remaining amortization period for core deposit intangibles was approximately 8.1 years. The following table presents estimated future amortization expenses as of December 31, 2021:
($ in thousands) |  | 2022 |  | 2023 |  | 2024 |  | 2025 |  | 2026 |  | 2027 and After |  | Total
Estimated future amortization expense |  | $ | 1,715 |  |  | $ | 1,234 |  |  | $ | 838 |  |  | $ | 523 |  |  | $ | 464 |  |  | $ | 1,637 |  |  | $ | 6,411 |

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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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