Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets

The following table sets forth activity for goodwill and other intangible assets for the periods indicated:

	Three Months Ended March 31,
	2014			2013
	(in thousands)
Total goodwill (1)	343,952			115,554
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period (1)	47,698			32,441
Accumulated amortization at beginning of period	(22,765		)	(16,720		)
Core deposit intangible, net at beginning of period	24,933			15,721
CDI current period amortization	(1,579		)	(1,028		)
Total core deposit intangible, net at end of period	23,354			14,693
Intangible assets not subject to amortization	919			—
Other intangible assets, net at end of period	24,273			14,693
Total goodwill and other intangible assets at end of period	$	368,225		$	130,247

Estimated Future Amortization Expense of Core Deposit Intangibles

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(1) See Note 3, Business Combinations, for additional information regarding goodwill and intangible assets recorded related to the acquisition of West Coast on April 1, 2013.

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining nine months ending December 31, 2014 and the succeeding four years:

	Amount
	(in thousands)
Year ending December 31,
2014	$	4,383
2015	4,934
2016	4,195
2017	3,361
2018	2,500