Goodwill and other intangible assets (Tables)

12 Months Ended

Dec. 31, 2012

Total Amortizing Intangible Assets

Total amortizing intangible assets were comprised of the following:

	Gross  Carrying Amount		Accumulated Amortization		Net Carrying Amount
	(In thousands)
December 31, 2012
Core deposit	$	755,794	$	670,940	$	84,854
Other		177,268		146,359		30,909
Total	$	933,062	$	817,299	$	115,763
December 31, 2011
Core deposit	$	755,794	$	626,453	$	129,341
Other		177,268		130,215		47,053
Total	$	933,062	$	756,668	$	176,394

Estimated Amortization Expense in Future Years

Estimated amortization expense in future years for such intangible assets is as follows:

	(In thousands)
Year ending December 31:
2013	$	46,912
2014		33,825
2015		20,938
2016		10,052
2017		3,303
Later years		733
	$	115,763

Summary of Goodwill Assigned to Reportable Segments for Purposes of Testing for Impairment

A summary of goodwill assigned to each of the Company’s reportable segments as of December 31, 2012 and 2011 for purposes of testing for impairment is as follows.

	(In thousands)
Business Banking	$	748,907
Commercial Banking		907,524
Commercial Real Estate		349,197
Discretionary Portfolio		—
Residential Mortgage Banking		—
Retail Banking		1,144,404
All Other		374,593
Total	$	3,524,625