OTHER INTANGIBLES

Core deposit intangibles and other intangibles are recorded on the acquisition date of an entity. During the measurement period, the Corporation may record subsequent adjustments to these intangibles for provisional amounts recorded at the acquisition date. The IAB acquisition on July 14, 2017 resulted in a core deposit intangible of $13,638,000 and other intangibles, consisting of non-compete intangibles, of $3,765,000. The Arlington Bank acquisition on May 19, 2017 resulted in a core deposit intangible of $4,526,000. The Ameriana acquisition on December 31, 2015 resulted in a core deposit intangible of $5,342,000, of which, $2,142,000 was recorded as a measurement period adjustment in the first quarter of 2016. Details regarding the IAB and Arlington Bank acquisitions are discussed in NOTE 2. ACQUISITIONS of these in the Notes to Consolidated Financial Statements.

The carrying basis and accumulated amortization of recognized core deposit and other intangibles are noted below.



	2017			2016
Gross carrying amount	$	63,940		$	61,798
Core deposit intangible acquired	18,164
Other intangibles acquired	3,765
Measurement period adjustment				2,142
Accumulated amortization	(54,721		)	(49,074		)
Core deposit intangible and other intangibles reduction
Core Deposit and Other Intangibles	$	31,148		$	14,866

Amortization expense for the years ended December 31, 2017, 2016 and 2015, was $5,647,000, $3,910,000 and $2,835,000, respectively.

Estimated future amortization expense is summarized as follows:



	Amortization Expense
2018	$	6,719
2019	5,169
2020	3,632
2021	3,427
2022	3,325
After 2022	8,876
	$	31,148