Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets

The following table sets forth activity for goodwill and other intangible assets for the periods indicated:



	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
	(in thousands)
Goodwill
Total goodwill	$	765,842		$	765,842		$	765,842		$	765,842
Other intangible assets, net
CDI:
Gross CDI balance at beginning of period	105,473			105,473			105,473			105,473
Accumulated amortization at beginning of period	(63,203		)	(51,407		)	(60,455		)	(48,219		)
CDI, net at beginning of period	42,270			54,066			45,018			57,254
CDI current period amortization	(2,649		)	(3,088		)	(5,397		)	(6,276		)
Total CDI, net at end of period	39,621			50,978			39,621			50,978
Intangible assets not subject to amortization	919			919			919			919
Other intangible assets, net at end of period	40,540			51,897			40,540			51,897
Total goodwill and other intangible assets at end of period	$	806,382		$	817,739		$	806,382		$	817,739

Estimated Future Amortization Expense of Core Deposit Intangibles

The following table provides the estimated future amortization expense of our CDI for the remaining six months ending December 31, 2019 and the succeeding four years:



	Year ending December 31,
	(in thousands)
2019	$	5,082
2020	8,724
2021	7,264
2022	5,880
2023	4,552