The carrying amount of goodwill totaled $67.1 million as of both March 31, 2024 and December 31, 2023. 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. The Company performs its annual goodwill impairment test as of October 1. The Company did not identify an indication of goodwill impairment for any of its reporting units during the quarter ended March 31, 2024.

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):


	March 31,			December 31,
	2024			2023
Core deposit intangibles:
Gross carrying amount	$	2,042		$	2,042
Accumulated amortization		(2,042	)		(2,042	)
Net book value	$	—		$	—

Other intangibles:
Gross carrying amount	$	14,545		$	14,545
Accumulated amortization		(9,329	)		(9,112	)
Net book value	$	5,216		$	5,433

Amortization expense for total other intangible assets was $217 thousand and $234 thousand for the three months ended March 31, 2024 and 2023. As of March 31, 2024, the estimated amortization expense of other intangible assets for the remainder of 2024 and each of the next five years is as follows (in thousands):


2024 (remainder of year)	$	622
2025		766
2026		694
2027		623
2028		551
2029		479
Thereafter		1,481
Total	$	5,216