XML 56 R42.htm IDEA: XBRL DOCUMENT v3.8.0.1
Goodwill and Core Deposit Intangibles (Tables)
 12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table presents changes in the carrying value of goodwill for the periods indicated:
 
2017
 
2016
 
(dollars in thousands)
Balance, beginning of year
$
102,490

 
$
50,832

Goodwill acquired during the year
390,839

 
51,658

Impairment losses
—

 
—

Balance, end of year
$
493,329

 
$
102,490

Accumulated impairment losses at end of year
—

 
—
Schedule of Finite-Lived Intangible Assets
he Company's change in the gross amount of core deposit intangibles and the related accumulated amortization consisted of the following at December 31:

 
2017
 
2016
 
2015
 
(dollars in thousands)
Gross amount of CDI:
 
 
 
 
 
Balance, beginning of year
$
15,102

 
$
10,782

 
$
7,876

Additions due to acquisitions
39,707

 
4,320

 
2,906

Balance, end of year
54,809

 
15,102

 
10,782

Accumulated amortization:
 
 
 
 
 
Balance, beginning of year
(5,651
)
 
(3,612
)
 
(2,262
)
Amortization
(6,144
)
 
(2,039
)
 
(1,350
)
Balance, end of year
(11,795
)
 
(5,651
)
 
(3,612
)
Net CDI, end of year
$
43,014

 
$
9,451

 
$
7,170