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EMPLOYEE BENEFIT PLANS | 6 Months Ended
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Jun. 30, 2019
Retirement Benefits [Abstract] |
EMPLOYEE BENEFIT PLANS | NOTE 7. EMPLOYEE BENEFIT PLANS Components of net periodic benefit cost:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30, | ​ | ​
​ | ​ | Pension Benefits | ​ | SERP Benefits | ​ | Pension Benefits | ​ | SERP Benefits | ​ | ​
(dollars in thousands) |  | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018 |  | 2019 |  | 2018
Service cost | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 0 | ​ | $ | 0
Interest cost | ​ | ​ | 22 | ​ | ​ | 24 | ​ | ​ | 10 | ​ | ​ | 8 | ​ | ​ | 44 | ​ | ​ | 47 | ​ | ​ | 19 | ​ | ​ | 17
Expected return on plan assets | ​ | ​ | (35) | ​ | ​ | (35) | ​ | ​ | (15) | ​ | ​ | (16) | ​ | ​ | (69) | ​ | ​ | (69) | ​ | ​ | (28) | ​ | ​ | (31)
Recognized net actuarial (gain) loss | ​ | ​ | 34 | ​ | ​ | 48 | ​ | ​ | 19 | ​ | ​ | 19 | ​ | ​ | 66 | ​ | ​ | 96 | ​ | ​ | 37 | ​ | ​ | 37
Net pension expense (benefit) | ​ | $ | 21 | ​ | $ | 37 | ​ | $ | 14 | ​ | $ | 11 | ​ | $ | 41 | ​ | $ | 74 | ​ | $ | 28 | ​ | $ | 23
​ The Company previously disclosed in its financial statements for the year ended December 31, 2018 that it expected to contribute $0 to its pension plan and $0 to its Supplemental Executive Retirement Plan ("SERP") in 2019. The Company has contributed $27,000 to its pension plan and $0 to its SERP as of June 30, 2019. The contribution to the pension plan was made in order to keep the plan fully funded, based upon the final actuarial calculation. The Company does not expect to make any additional contributions to its pension plan or SERP during the remainder of 2019. As a result of freezing the plan effective April 1, 2000, there is no service cost to record on the pension plan or the SERP for the six-month periods ending June 30, 2019 and 2018. All other components of cost noted in the table above were recorded in other expense under noninterest expenses on the Consolidated Statements of Income for all periods presented.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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