OTHER INTANGIBLES

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

OTHER INTANGIBLES

OTHER INTANGIBLES

Core deposit intangibles and other intangibles are recorded on the acquisition date of an entity. The Corporation has one year after the acquisition date, the measurement period, to record subsequent adjustments to these intangibles for provisional amounts recorded at the acquisition date. The Level One acquisition on April 1, 2022 resulted in a core deposit intangible of $17.2 million and other intangibles, consisting of non-compete intangibles, of $1.4 million. Details regarding the Level One acquisition are discussed in NOTE 2. ACQUISITIONS of these Notes to Consolidated Condensed Financial Statements. The carrying basis and accumulated amortization of recognized core deposit intangibles and other intangibles are noted below.

	March 31, 2023		December 31, 2022
Gross carrying amount	$	123,285	$	104,643
Other intangibles acquired	—		18,642
Accumulated amortization	(89,640)		(87,443)
Total core deposit and other intangibles	$	33,645	$	35,842

The core deposit intangibles and other intangibles are being amortized primarily on an accelerated basis over their estimated useful lives, generally over a period of two years to ten years. Intangible amortization expense for the three months ended March 31, 2023 was $2.2 million, compared to the three months ended March 31, 2022 which was $1.4 million. Estimated future amortization expense is summarized as follows:

	Amortization Expense
2023	$	6,547
2024	7,271
2025	6,028
2026	4,910
2027	3,603
After 2027	5,286
	$	33,645