Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill And Other Intangible Assets, Net Of Accumulated Amortization

The following table presents the carrying value for goodwill allocated by reportable segment:

(In thousands)	Community Banking		HSA Bank		Total Goodwill
Balance at January 1, 2015	$	516,560	$	13,327	$	529,887
Goodwill acquired	—		8,486		8,486
Balance at December 31, 2015	$	516,560	$	21,813	$	538,373

Schedule of Finite-Lived Intangible Assets

The gross carrying amount and accumulated amortization of core deposit intangibles ("CDI") and customer relationships included in the reportable segments are as follows:

	At December 31,
	2015							2014
(In thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Community Banking, CDI	$	49,420	$	(48,277	)	$	1,143	$	49,420	$	(46,754	)	$	2,666
HSA Bank:
CDI	22,000		(3,269		)	18,731		—		—			—
Customer relationships	21,000		(1,548		)	19,452		—		—			—
Total HSA Bank	43,000		(4,817		)	38,183		—		—			—
Total other intangible assets	$	92,420	$	(53,094	)	$	39,326	$	49,420	$	(46,754	)	$	2,666

Schedule Of Expected Amortization Expense, Next Four Years

As of December 31, 2015, the remaining estimated aggregate future amortization expense for intangible assets is as follows:

(In thousands)
2016	$	5,652
2017	4,062
2018	3,847
2019	3,847
2020	3,847
Thereafter	18,071