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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of changes in goodwill
The table below summarizes changes in goodwill recorded by the Company during the periods ended December 31, 2017 and 2016:
 
December 31,
2017
 
December 31,
2016
Beginning balance, January 1
$
66,351

 
$
65,982

Additions
3,132

 
369

Ending balance
$
69,483

 
$
66,351
Schedule of changes and amortization of finite-lived intangible assets
The tables below present the activity and amortizations of finite-lived intangible assets:

 
December 31,
2017
 
December 31,
2016
Intangible assets, January 1
$
34,362

 
$
34,362

Additions
878

 
—

Total intangible assets, end of year
35,240

 
34,362

 
 

 
 
Accumulated amortization, January 1
$
(19,220
)
 
$
(11,933
)
Current year amortization
(4,736
)
 
(7,287
)
Total accumulated amortization
(23,956
)
 
(19,220
)
 
 

 
 
Net intangible assets, end of year
$
11,284

 
$
15,142
Summary of Finite-lived Intangible Assets Amortization Expense
Future expense remaining of approximately $11.3 million will be amortized as follows:
2018
$
3,389

2019
2,640

2020
2,069

2021
1,521

2022
1,239

Thereafter
426

 
$
11,284