Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table summarizes the changes in goodwill:

	2015		2014			2013
	(in thousands)
Balance at beginning of year	$	530,593	$	530,607		$	530,656
Other goodwill deductions	—		(14		)	(49		)
Balance at end of year	$	530,593	$	530,593		$	530,607

Schedule of Finite-Lived Intangible Assets by Major Class

The following table summarizes intangible assets as of December 31:

	2015							2014
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
	(in thousands)
Amortizing:
Core deposit	$	50,279	$	(50,279	)	$	—	$	50,279	$	(50,054	)	$	225
Other	9,123		(9,123		)	—		9,123		(9,101		)	22
Total amortizing	59,402		(59,402		)	—		59,402		(59,155		)	247
Non-amortizing	963		—			963		963		—			963
	$	60,365	$	(59,402	)	$	963	$	60,365	$	(59,155	)	$	1,210