The carrying amount of goodwill totaled $66.1 million as of both June 30, 2020 and December 31, 2019. The Company performs a goodwill impairment test on an annual basis as of October 1st or more frequently if events and circumstances warrant.

	Banking		Non-Banking		Total
Balance, December 31, 2019	$	48,536	$	17,526	$	66,062
No activity during the period		—		—		—
Balance, June 30, 2020	$	48,536	$	17,526	$	66,062

Goodwill is not amortized but, instead, is subject to impairment tests on at least an annual basis, and more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount. Based on the volatility in the capital markets in 2020 and overall economic conditions as a result of the COVID-19 pandemic accompanied by a decline in the Company’s stock price, a goodwill impairment test was performed in the second quarter of 2020. Based on its qualitative assessment, the Company concluded that it was not more likely than not that goodwill was impaired as of June 30, 2020. Therefore, no quantitative assessment was deemed necessary as of June 30, 2020.

The Company has other intangible assets that are amortized, consisting of core deposit intangibles and other intangibles (primarily related to customer relationships). Gross carrying amount, accumulated amortization and net book value, were as follows (in thousands):

	June 30,			December 31,
	2020			2019
Other intangibles assets:
Gross carrying amount	$	15,925		$	15,925
Accumulated amortization		(7,645	)		(7,064	)
Net book value	$	8,280		$	8,861

Amortization expense for total other intangible assets was $287 thousand and $581 thousand for the three and six months ended June 30, 2020, respectively, and $316 thousand and $639 thousand for the three and six months ended June 30, 2019, respectively. As of June 30, 2020, the estimated amortization expense of other intangible assets for the remainder of 2020 and each of the next five years is as follows (in thousands):

2020 (remainder of year)	$	553
2021		1,014
2022		923
2023		852
2024		783
2025		714