Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Other Intangibles

Changes in the carrying amount and accumulated amortization of the Company’s core deposit premiums and other intangible assets at December 31, 2020 and 2019 were as follows:

(In thousands)	2020		2019
Core deposit premiums:
Balance, beginning of year	$	111,808	$	79,807
Acquisitions(1)	—		42,695
Disposition of intangible asset(2)	(2,324)		—
Amortization	(12,121)		(10,694)
Balance, end of year	97,363		111,808
Books of business and other intangibles:
Balance, beginning of year	15,532		11,527
Acquisitions(3)	—		5,116
Disposition of intangible asset	(413)		—
Amortization	(1,372)		(1,111)
Balance, end of year	13,747		15,532
Total other intangible assets, net	$	111,110	$	127,340

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(1)    Core deposit premiums of $24.3 million and $18.4 million were recorded during 2019 as part of the Landrum and Reliance acquisitions, respectively. See Note 2, Acquisitions, for additional information on acquisitions completed in 2019.

(2)    Adjustments recorded for the premiums on certain deposit liabilities associated with the sale of the Texas Branches and Colorado Branches.

(3)    The Company recorded $5.1 million during 2019 primarily related to the wealth management operations acquired from Landrum. See Note 2, Acquisitions, for additional information on acquisitions completed in 2019.

The carrying basis and accumulated amortization of the Company’s other intangible assets at December 31, 2020 and 2019 were as follows:  

(In thousands)	2020		2019
Core deposit premiums:
Gross carrying amount	$	146,355	$	148,679
Accumulated amortization	(48,992)		(36,871)
Core deposit premiums, net	97,363		111,808
Books of business and other intangibles:
Gross carrying amount	19,937		20,350
Accumulated amortization	(6,190)		(4,818)
Books of business and other intangibles, net	13,747		15,532
Total other intangible assets, net	$	111,110	$	127,340

Schedule of Estimated Remaining Amortization Expense

The Company’s estimated remaining amortization expense on other intangible assets as of December 31, 2020 is as follows: 

Year	(In thousands)
2021	$	13,379
2022	13,327
2023	13,044
2024	12,141
2025	9,557
Thereafter	49,662
Total	$	111,110