Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2013

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

The following table shows the changes in the carrying amount of goodwill by segment for the nine months ended September 30, 2013 and 2012:

(dollars in thousands)	Community Banking		Other		Total
Balance, January 1, 2013	$	297,055	$	41,765	$	338,820
Goodwill acquired during the period		13,909		—		13,909
Balance, September 30, 2013	$	310,964	$	41,765	$	352,729
Balance, January 1, 2012	$	212,412	$	40,765	$	253,177
Goodwill acquired during the period		85,706		1,000		86,706
Balance, September 30, 2012	$	298,118	$	41,765	$	339,883

Schedule of Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets

The gross carrying amount and accumulated amortization of other intangible assets at September 30, 2013 and December 31, 2012 was as follows:

(dollars in thousands)	Gross Carrying Amount		Accumulated Amortization and Impairment			Net Carrying Amount
September 30, 2013
Amortized intangible assets:
Core deposit	$	44,021	$	(29,987	)	$	14,034
Customer business relationships		26,549		(19,444	)		7,105
Customer trust relationships		5,352		(1,633	)		3,719
Customer loan relationships		4,413		(2,675	)		1,738
Total intangible assets	$	80,335	$	(53,739	)	$	26,596
December 31, 2012
Amortized intangible assets:
Core deposit	$	40,559	$	(25,908	)	$	14,651
Customer business relationships		26,411		(18,153	)		8,258
Customer trust relationships		5,352		(1,080	)		4,272
Customer loan relationships		4,413		(2,374	)		2,039
Total intangible assets	$	76,735	$	(47,515	)	$	29,220

Schedule of Estimated Amortization Expense for Future Years

Estimated amortization expense for future years is as follows:

(dollars in thousands)
2013 remaining	$	1,919
2014		6,638
2015		5,399
2016		4,352
2017		2,982
Thereafter		5,306
Total	$	26,596