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REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables) | 6 Months Ended
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Jun. 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 six months ended June 30, 2018 and 2017.
| Three Months Ended |  | Six Months Ended
(Dollars in thousands, except per share data) | June 30, 2018 |  | June 30, 2017 |  | June 30, 2018 |  | June 30, 2017
Noninterest income |  |  |  |  |  |  |
Service charges on deposits | $ | 835 |  |  | $ | 851 |  |  | $ | 1,673 |  |  | $ | 1,655 |
Trust and investment management income | 1,701 |  |  | 1,623 |  |  | 3,369 |  |  | 3,069 |
Brokerage income | 501 |  |  | 518 |  |  | 1,059 |  |  | 985 |
Merchant and bankcard fees (interchange income) | 711 |  |  | 667 |  |  | 1,366 |  |  | 1,303 |
Revenue from contracts with customers | 3,748 |  |  | 3,659 |  |  | 7,467 |  |  | 7,012 |
Other service charges | 606 |  |  | 194 |  |  | 780 |  |  | 321 |
Mortgage banking activities | 679 |  |  | 813 |  |  | 1,314 |  |  | 1,316 |
Earnings on life insurance | 291 |  |  | 271 |  |  | 568 |  |  | 539 |
Other income | 135 |  |  | 32 |  |  | 216 |  |  | 113 |
Investment securities gains | 46 |  |  | 654 |  |  | 862 |  |  | 657 |
Total noninterest income | $ | 5,505 |  |  | $ | 5,623 |  |  | $ | 11,207 |  |  | $ | 9,958 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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