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REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)
 9 Months Ended
Sep. 30, 2018
Revenue from Contract with Customer [Abstract]  
Noninterest Income Disaggregated by Revenue Source
The following table presents our noninterest income disaggregated by revenue source for the three and nine months ended September 30, 2018 and 2017.
 
Three Months Ended
 
Nine Months Ended
(Dollars in thousands)
September 30, 2018
 
September 30, 2017
 
September 30, 2018
 
September 30, 2017
Noninterest income
 
 
 
 
 
 
 
Service charges on deposits
$
926

 
$
876

 
$
2,599

 
$
2,531

Trust and investment management income
1,668

 
1,551

 
5,037

 
4,620

Brokerage income
455

 
424

 
1,514

 
1,409

Merchant and bankcard fees (interchange income)
681

 
647

 
2,047

 
1,950

Revenue from contracts with customers
3,730

 
3,498

 
11,197

 
10,510

 
 
 
 
 
 
 
 
Other service charges
409

 
119

 
1,189

 
440

Mortgage banking activities
735

 
797

 
2,049

 
2,113

Income from life insurance
533

 
275

 
1,101

 
814

Other income
56

 
34

 
272

 
147

Investment securities gains
29

 
533

 
891

 
1,190

Total noninterest income
$
5,492

 
$
5,256

 
$
16,699

 
$
15,214