Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangibles

The Company’s goodwill and other intangibles (carrying basis and accumulated amortization) at June 30, 2018 and December 31, 2017, were as follows: 

(In thousands)	June 30, 2018			December 31, 2017
Goodwill	$	845,687		$	842,651
Core deposit premiums:
Gross carrying amount	105,984			105,984
Accumulated amortization	(21,425		)	(16,659		)
Core deposit premiums, net	84,559			89,325
Books of business intangible:
Gross carrying amount	15,234			15,414
Accumulated amortization	(3,177		)	(2,827		)
Books of business intangible, net	12,057			12,587
Other intangibles:
Gross carrying amount	2,068			6,037
Accumulated amortization	(1,964		)	(1,878		)
Other intangibles, net	104			4,159
Other intangible assets, net	96,720			106,071
Total goodwill and other intangible assets	$	942,407		$	948,722

Estimated Remaining Amortization Expense

The Company’s estimated remaining amortization expense on intangibles as of June 30, 2018 is as follows:

(In thousands)	Year	Amortization Expense
	Remainder of 2018	$	5,387
	2019	10,565
	2020	10,552
	2021	10,490
	2022	10,438
	Thereafter	49,288
	Total	$	96,720