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Goodwill and Other Amortizing Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2015
Goodwill Disclosure [Abstract]  
Summarized Other Intangible Assets
The following table summarizes other intangible assets, which for each year includes only core deposit intangibles:
 
Gross
Intangible
Assets
 
Accumulated
Amortization
 
Net
Intangible
Assets
 
(dollars in thousands)
December 31, 2015
 
 
 
 
 
Customer deposit intangibles
$
19,142

 
$
(18,619
)
 
$
523

Customer list intangible
$
984

 
$
(276
)
 
$
708

Total other intangible assets
$
20,126

 
$
(18,895
)
 
$
1,231

 
 
 
 
 
 
December 31, 2014
 
 
 
 
 
Customer deposit intangibles
$
22,470

 
$
(21,773
)
 
$
697

Customer list intangible
$
984

 
$
(16
)
 
$
968

Total other intangible assets
$
23,454

 
$
(21,789
)
 
$
1,665
Estimated Amortization Expense of Core Deposit Intangibles
The following presents the estimated amortization expense of core deposit intangibles and the customer intangible list:
 
Core Deposit Intangibles
Customer Intangible List
Total
 
(dollars in thousands)
2016
$
207

$
168

$
375

2017
90

130

220

2018
87

99

186

2019
78

77

155

2020
18

59

77

Thereafter
43

175

218

Total
$
523

$
708

$
1,231