Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill and Intangible Assets

The following table sets forth activity for goodwill and intangible assets for the period:

	Three Months Ended March 31,
	2013			2012
	(in thousands)
Total goodwill	$	115,554		$	115,554
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	32,441			32,441
Accumulated amortization at beginning of period	(16,720		)	(12,275		)
Core deposit intangible, net at beginning of period	15,721			20,166
CDI current period amortization	(1,028		)	(1,150		)
Total core deposit intangible, net at end of period	14,693			19,016
Total goodwill and intangible assets at end of period	$	130,247		$	134,570

Estimated Future Amortization Expense of Core Deposit Intangibles

The following table provides the estimated future amortization expense of core deposit intangibles for the remaining nine months ending December 31, 2013 and the succeeding four years:

	Amount
	(in thousands)
Year ending December 31,
2013	$	2,936
2014	3,397
2015	2,645
2016	2,183
2017	1,627