Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangibles

Changes in the carrying amount and accumulated amortization of the Company’s core deposit premiums and other intangible assets at September 30, 2021 and December 31, 2020 were as follows: 

	September 30,		December 31,
(In thousands)	2021		2020
Core deposit premiums:
Balance, beginning of year	$	97,363	$	111,808
Disposition of intangible asset(1)	(674)		(2,324)
Amortization	(8,978)		(12,121)
Balance, end of period	87,711		97,363
Books of business and other intangibles:
Balance, beginning of year	13,747		15,532
Disposition of intangible asset	—		(413)
Amortization	(1,030)		(1,372)
Balance, end of period	12,717		13,747
Total other intangible assets, net	$	100,428	$	111,110

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(1)    Adjustments recorded for the premiums on certain deposit liabilities associated with the sale of banking operations.

The carrying basis and accumulated amortization of the Company’s other intangible assets at September 30, 2021 and December 31, 2020 were as follows: 

	September 30,		December 31,
(In thousands)	2021		2020
Core deposit premiums:
Gross carrying amount	$	144,202	$	146,355
Accumulated amortization	(56,491)		(48,992)
Core deposit premiums, net	87,711		97,363
Books of business and other intangibles:
Gross carrying amount	19,937		19,937
Accumulated amortization	(7,220)		(6,190)
Books of business and other intangibles, net	12,717		13,747
Total other intangible assets, net	$	100,428	$	111,110

Estimated Remaining Amortization Expense

The Company’s estimated remaining amortization expense on other intangible assets as of September 30, 2021 is as follows:

(In thousands)	Year	Amortization Expense
	Remainder of 2021	$	3,332
	2022	13,275
	2023	12,992
	2024	12,090
	2025	9,505
	Thereafter	49,234
	Total	$	100,428