Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Other Intangible Assets and Related Amortization

The carrying value of intangible assets subject to amortization was as follows:

	December 31, 2015
(in thousands)	Purchase Value		Accumulated Amortization		Carrying Value
Core deposit intangibles	$	190,655	$	97,026	$	93,629
Credit card and trust relationships		22,400		12,735		9,665
Trade name		11,722		11,722		—
Merchant processing relationships		10,000		5,756		4,244
	$	234,777	$	127,239	$	107,538

	December 31, 2014
(in thousands)	Purchase Value		Accumulated Amortization		Carrying Value
Core deposit intangibles	$	198,002	$	85,254	$	112,748
Credit card and trust relationships		22,400		10,366		12,034
Non-compete agreements		400		400		—
Trade name		11,722		9,334		2,388
Merchant processing relationships		10,000		4,360		5,640
	$	242,524	$	109,714	$	132,810

	Years Ended December 31,
(in thousands)	2015		2014		2013
Aggregate amortization expense for:
Core deposit intangibles	$	18,031	$	19,897	$	21,905
Credit card and trust relationships		2,369		2,566		2,819
Value of insurance business acquired		—		34		148
Non-compete agreements		—		100		200
Trade name		2,388		2,605		2,605
Merchant processing relationships		1,396		1,595		1,793
	$	24,184	$	26,797	$	29,470

Estimated Amortization Expense of Other Intangible Assets

The following table shows estimated amortization expense of other intangible assets for the five succeeding years and thereafter, calculated based on current amortization schedules (in thousands):

2016	$	19,782
2017		17,814
2018		15,842
2019		13,328
2020		10,529
Thereafter		30,243
	$	107,538