GOODWILL AND INTANGIBLE ASSETS:

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS

GOODWILL AND INTANGIBLE ASSETS:

The Corporation completed its annual impairment testing of goodwill during the fourth quarter of 2019 and 2018. Management does not believe any amount of goodwill is impaired.

Intangible assets subject to amortization at December 31, 2019 and 2018 are as follows:  

	2019				2018
	Gross		Accumulated		Gross		Accumulated
(Dollar amounts in thousands)	Amount		Amortization		Amount		Amortization
Core deposit intangible	$	21,205	$	10,562	$	10,836	$	9,639
	$	21,205	$	10,562	$	10,836	$	9,639

 Aggregate amortization expense was $923 thousand, $433 thousand and $479 thousand for 2019, 2018 and 2017, respectively.

Estimated amortization expense for the next five years is as follows:

	In thousands
2020	$	1,671
2021	1,615
2022	1,390
2023	1,127
2024	848