4. GOODWILL AND INTANGIBLE ASSETS

The Company’s intangible assets consist of core deposits, goodwill, and other intangibles arising from acquisitions. The Company has determined that core deposit intangibles have finite lives and amortizes them over their estimated useful lives. Core deposit intangibles are being amortized over the period of expected benefit, which ranges from 4 to 10 years, using an accelerated method. Other amortizable intangible assets are being amortized over the period of expected benefit, which ranges from 4 to 10 years, using various methods.

In the normal course of business, the Company routinely monitors the impact of the changes in the financial markets and includes these assessments in the Company’s impairment process. The Company determined that there was no impairment to its goodwill or intangible assets as of the balance sheet date.

Effective June 30, 2022, the Company, the Bank, and CSP completed the sale of DHFB, which was formerly a subsidiary of the Bank, resulting in a reduction in both the Company’s goodwill of $10.3 million and intangible assets of $5.7 million.

Amortization expense of intangibles for the three and six months ended June 30, 2022 and 2021 totaled $2.9 million and $6.0 million, and $3.6 million and $7.3 million, respectively.

As of June 30, 2022, the estimated remaining amortization expense of intangibles is as follows for the years ending (dollars in thousands):

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