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Retirement Plans | 6 Months Ended
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Jun. 30, 2017
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] |
Retirement Plans | RETIREMENT PLANS (Dollars in Thousands) The following tables provide the components of net periodic benefit costs for the three and six-month periods ended June 30, 2017 and 2016.
|  |  |  | Select |  |
|  | Employees' |  | Executive |  | Postretirement
|  | Pension |  | Retirement |  | Benefit
|  | Plan |  | Plan |  | Plans
Net Periodic Benefit Cost |  |  |  |  |  |
For the Three Months Ended June 30, 2017: |  |  |  |  |  |
Service Cost |  | $ | 350 |  |  | $ | 10 |  |  | $ | 37 |
Interest Cost |  | 373 |  |  | 59 |  |  | 63 |
Expected Return on Plan Assets |  | (800 | ) |  | — |  |  | — |
Amortization of Prior Service (Credit) Cost |  | (14 | ) |  | 14 |  |  | (3 | )
Amortization of Net Loss |  | 148 |  |  | 33 |  |  | — |
Net Periodic Benefit Cost |  | $ | 57 |  |  | $ | 116 |  |  | $ | 97 |
Plan Contributions During the Period |  | $ | — |  |  | $ | 116 |  |  | $ | 177 |
For the Three Months Ended June 30, 2016: |  |  |  |  |  |
Service Cost |  | $ | 376 |  |  | $ | 8 |  |  | $ | 63 |
Interest Cost |  | 424 |  |  | 48 |  |  | 15 |
Expected Return on Plan Assets |  | (828 | ) |  | — |  |  | — |
Amortization of Prior Service (Credit) Cost |  | (15 | ) |  | 14 |  |  | (3 | )
Amortization of Net Loss |  | 138 |  |  | 28 |  |  | — |
Net Periodic Benefit Cost |  | $ | 95 |  |  | $ | 98 |  |  | $ | 75 |
Plan Contributions During the Period |  | $ | — |  |  | $ | 112 |  |  | $ | 72 |
Net Periodic Benefit Cost |  |  |  |  |  |
For the Six Months Ended June 30, 2017: |  |  |  |  |  |
Service Cost |  | $ | 700 |  |  | $ | 20 |  |  | $ | 74 |
Interest Cost |  | 723 |  |  | 109 |  |  | 149 |
Expected Return on Plan Assets |  | (1,600 | ) |  | — |  |  | — |
Amortization of Prior Service Cost (Credit) |  | (28 | ) |  | 28 |  |  | (6 | )
Amortization of Net Loss |  | 296 |  |  | 63 |  |  | — |
Net Periodic Benefit Cost |  | $ | 91 |  |  | $ | 220 |  |  | $ | 217 |
Plan Contributions During the Period |  | $ | — |  |  | $ | 229 |  |  | $ | 230 |
Estimated Future Contributions in the Current Fiscal Year |  | $ | — |  |  | $ | 229 |  |  | $ | 230 |
For the Six Months Ended June 30, 2016: |  |  |  |  |  |
Service Cost |  | $ | 752 |  |  | $ | 16 |  |  | $ | 125 |
Interest Cost |  | 844 |  |  | 106 |  |  | 96 |
Expected Return on Plan Assets |  | (1,656 | ) |  | — |  |  | — |
Amortization of Prior Service (Credit) Cost |  | (30 | ) |  | 29 |  |  | (6 | )
Amortization of Net Loss |  | 278 |  |  | 56 |  |  | — |
Net Periodic Benefit Cost |  | $ | 188 |  |  | $ | 207 |  |  | $ | 215 |
Plan Contributions During the Period |  | $ | — |  |  | $ | 219 |  |  | $ | 150 |
We were not required to make a contribution to our qualified pension plan in 2017, and currently, we do not expect to make additional contributions in 2017. Arrow makes contributions to its other post-retirement benefit plans in an amount equal to benefit payments for the year.

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