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Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2018
Other Intangible Assets [Abstract]  
Schedule of Finite-Lived Intangible Assets
The gross carrying amount and accumulated amortization of other intangible assets were as follows at the periods indicated:
 
 
December 31,
 
 
2018
 
2017
  
 
Gross
Carrying
Amount
 
Accumulated Amortization
 
Net
Carrying
Amount
 
Gross
Carrying
Amount
 
Accumulated Amortization
 
Net
Carrying
Amount
Core deposit intangible
 
$
23,908

 
$
(19,678
)
 
$
4,230

 
$
23,908

 
$
(18,953
)
 
$
4,955

Trust relationship intangible
 
—

 
—

 
—

 
753

 
(753
)
 
—

Total
 
$
23,908

 
$
(19,678
)
 
$
4,230

 
$
24,661

 
$
(19,706
)
 
$
4,955
Schedule of Expected Amortization Schedule
The following table reflects the estimated amortization expense for other intangible assets over the period of estimated economic benefit:
 
 
Core Deposit
Intangible
2019
 
$
705

2020
 
682

2021
 
655

2022
 
625

2023
 
592

Thereafter
 
971

Total
 
$
4,230