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GOODWILL AND OTHER INTANGIBLE ASSETS, NET (Tables)
 12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
The following table presents changes in the carrying amount of goodwill for the periods indicated:
 
 
Year Ended December 31,
($ in thousands)
 
2017
 
2016
 
2015
Goodwill balance at beginning of the year
 
$
39,244

 
$
39,244

 
$
31,591

Goodwill adjustments for purchase accounting
 
—

 
—

 
7,653

Goodwill adjustments for discontinued operations
 
(2,100
)
 
—

 
—

Goodwill balance at end of year
 
$
37,144

 
$
39,244

 
$
39,244

Accumulated impairment losses at end of year
 
$
2,100

 
$
—

 
$
—
Other Intangible Assets
The following table presents a summary of other intangible assets as of the dates indicated:
($ in thousands)
 
Gross Carrying Value
 
Accumulated Amortization
 
Net Carrying Value
December 31, 2017
 
 
 
 
 
 
Core deposit intangibles
 
$
30,904

 
$
21,551

 
$
9,353

December 31, 2016
 
 
 
 
 
 
Core deposit intangibles
 
$
30,904

 
$
17,656

 
$
13,248

Customer relationship intangible
 
670

 
391

 
279

Trade name intangibles
 
90

 
—

 
90
Estimated Future Amortization Expense
The following table presents estimated future amortization expenses as of December 31, 2017:
($ in thousands)
 
2018
 
2019
 
2020
 
2021
 
2022 and After
 
Total
Estimated future amortization expense
 
$
3,007

 
$
2,195

 
$
1,518

 
$
1,081

 
$
1,552

 
$
9,353