EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
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| Defined Benefit Pension Plan [Member] | ||||
| Components of Net Periodic Benefit Costs: | ||||
| Service Cost | $ 1,688 | $ 1,613 | $ 3,376 | $ 3,226 |
| Interest Cost | 1,437 | 1,397 | 2,874 | 2,794 |
| Expected Return on Plan Assets | (2,006) | (1,934) | (4,012) | (3,870) |
| Prior Service Cost Amortization | 56 | 69 | 112 | 139 |
| Net Gain (Loss) Amortization | 953 | 801 | 1,906 | 1,602 |
| Net Periodic Benefit Cost (Income) | $ 2,128 | $ 1,946 | $ 4,256 | $ 3,891 |
| Discount Rate (in percent) | 4.21% | 4.52% | 4.21% | 4.52% |
| Long-Term Rate of Return on Assets (in percent) | 7.25% | 7.50% | 7.25% | 7.50% |
| Supplemental Executive Retirement Plan [Member] | ||||
| Components of Net Periodic Benefit Costs: | ||||
| Interest Cost | $ 48 | $ 40 | $ 96 | $ 80 |
| Prior Service Cost Amortization | 0 | 0 | 0 | 0 |
| Net Gain (Loss) Amortization | 149 | 190 | 298 | 380 |
| Net Periodic Benefit Cost (Income) | $ 197 | $ 230 | $ 394 | $ 460 |
| Discount Rate (in percent) | 3.92% | 4.13% | 3.92% | 4.13% |
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- Definition The amount of gains or losses recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The interest rate used to adjust for the time value of money for the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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