Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

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 March 31,
	2016			2015
	(in thousands)
Goodwill
Total goodwill	$	382,762		$	382,537
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	58,598			58,598
Accumulated amortization at beginning of period	(35,940		)	(29,058		)
Core deposit intangible, net at beginning of period	22,658			29,540
CDI current period amortization	(1,583		)	(1,817		)
Total core deposit intangible, net at end of period	21,075			27,723
Intangible assets not subject to amortization	919			919
Other intangible assets, net at end of period	21,994			28,642
Total goodwill and other intangible assets at end of period	$	404,756		$	411,179

Estimated Future Amortization Expense of Core Deposit Intangibles

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining nine months ending December 31, 2016 and the succeeding four years:



	Amount
	(in thousands)
Year ending December 31,
2016	$	4,363
2017	4,913
2018	3,855
2019	2,951
2020	2,048