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REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)
12 Months Ended
Dec. 31, 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 years ended December 31. 

(Dollars in thousands)201820172016
Noninterest income
Service charges on deposits$3,578 $3,392 $3,285 
Trust and investment management income6,576 6,400 5,091 
Brokerage income2,035 1,896 1,933 
Merchant and bankcard fees (interchange income)2,821 2,618 2,563 
Revenue from contracts with customers15,010 14,306 12,872 
Other service charges1,392 673 591 
Mortgage banking activities2,663 2,919 3,412 
Income from life insurance1,463 1,109 1,099 
Other income320 190 345 
Investment securities gains1,006 1,190 1,420 
Total noninterest income$21,854 $20,387 $19,739