Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 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 June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(in thousands)
Goodwill
Goodwill at beginning of period	$	343,952		$	115,554		$	343,952		$	115,554
Established through acquisitions (1)	—			228,398			—			228,398
Total goodwill	343,952			343,952			343,952			343,952
Other intangible assets, net
Core deposit intangible:
Gross core deposit intangible balance at beginning of period	47,698			32,441			47,698			32,441
Accumulated amortization at beginning of period	(24,344		)	(17,748		)	(22,765		)	(16,720		)
Core deposit intangible, net at beginning of period	23,354			14,693			24,933			15,721
Established through acquisitions (1)	—			15,257			—			15,257
CDI current period amortization	(1,481		)	(1,693		)	(3,060		)	(2,721		)
Total core deposit intangible, net at end of period	21,873			28,257			21,873			28,257
Intangible assets not subject to amortization	919			913			919			913
Other intangible assets, net at end of period	22,792			29,170			22,792			29,170
Total goodwill and other intangible assets at end of period	$	366,744		$	373,122		$	366,744		$	373,122

Estimated Future Amortization Expense of Core Deposit Intangibles

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

	Amount
	(in thousands)
Year ending December 31,
2014	$	2,903
2015	4,934
2016	4,195
2017	3,361
2018	2,500