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Retirement Plans | 3 Months Ended
--- | ---
Mar. 31, 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-month periods ended March 31, 2017 and 2016.
|  |  |  | Select |  |
|  | Employees' |  | Executive |  | Postretirement
|  | Pension |  | Retirement |  | Benefit
|  | Plan |  | Plan |  | Plans
Net Periodic Benefit Cost |  |  |  |  |  |
For the Three Months Ended March 31, 2017: |  |  |  |  |  |
Service Cost |  | $ | 350 |  |  | $ | 10 |  |  | $ | 37 |
Interest Cost |  | 350 |  |  | 50 |  |  | 86 |
Expected Return on Plan Assets |  | (800 | ) |  | — |  |  | — |
Amortization of Prior Service (Credit) Cost |  | (14 | ) |  | 14 |  |  | (3 | )
Amortization of Net Loss |  | 148 |  |  | 30 |  |  | — |
Net Periodic Benefit Cost |  | $ | 34 |  |  | $ | 104 |  |  | $ | 120 |
Plan Contributions During the Period |  | $ | — |  |  | $ | 113 |  |  | $ | 53 |
For the Three Months Ended March 31, 2016: |  |  |  |  |  |
Service Cost |  | $ | 376 |  |  | $ | 8 |  |  | $ | 62 |
Interest Cost |  | 420 |  |  | 58 |  |  | 80 |
Expected Return on Plan Assets |  | (826 | ) |  | — |  |  | — |
Amortization of Prior Service (Credit) Cost |  | (14 | ) |  | 14 |  |  | (3 | )
Amortization of Net Loss |  | 138 |  |  | 28 |  |  | — |
Net Periodic Benefit Cost |  | $ | 94 |  |  | $ | 108 |  |  | $ | 139 |
Plan Contributions During the Period |  | $ | — |  |  | $ | 107 |  |  | $ | 78 |
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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