Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill and Other Intangible Assets [Abstract]

Components of other intangible assets and related amortization

The carrying value of intangible assets subject to amortization was as follows (in thousands):

	December 31, 2011
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Core deposit intangibles	$	206,047	$	27,691	$	178,356
Credit card and trust relationships		22,400		1,908		20,492
Value of insurance business acquired		2,431		1,926		505
Non-compete agreements		322		322		—
Trade name		11,822		100		11,722
	$	243,022	$	31,947	$	211,075

	December 31, 2010
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Core deposit intangibles	$	25,747	$	13,218	$	12,529
Value of insurance business acquired		2,431		1,757		674
Non-compete agreements		322		322		—
Trade name		100		100		—
	$	28,600	$	15,397	$	13,203

		Gross Carrying		Gross Carrying		Gross Carrying
	Years Ended December 31,
	2011		2010		2009
Aggregate amortization expense for:
Core deposit intangibles	$	14,474	$	2,491	$	1,114
Credit card and trust relationships		1,908		—		—
Value of insurance business acquired		169		213		255
Non-compete agreements		—		14		28
Trade name		—		10		20
	$	16,551	$	2,728	$	1,417

Estimated amortization expense of other intangible assets

2012	$	31,561
2013		29,565
2014		24,969
2015		20,579
2016		18,834
Thereafter		85,567
	$	211,075