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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract] |
Change in the projected benefit obligation, plan assets at fair value and funded status | The change in the Company's postretirement benefit obligation is as follows:
| Year Ended December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Change in Benefit Obligation |  |  |  |  |  |  |  |
Benefit obligation at beginning of year | $ | 36,626 |  |  | $ | 37,076 |  |  | $ | 34,995 |
Service cost | 2,323 |  |  | 1,808 |  |  | 1,295 |
Interest cost | 1,498 |  |  | 1,448 |  |  | 1,343 |
Actuarial (gain) loss | (2,846 | ) |  | (2,829 | ) |  | 373 |
Benefits paid | (934 | ) |  | (877 | ) |  | (930 | )
Plan amendments | 815 |  |  | — |  |  | — |
Benefit obligation at end of year | $ | 37,482 |  |  | $ | 36,626 |  |  | $ | 37,076 |
Change in Plan Assets |  |  |  |  |  |  |  |
Fair value of plan assets at end of year | — |  |  | — |  |  | — |
Funded status at end of year | $ | (37,482 | ) |  | $ | (36,626 | ) |  | $ | (37,076 | )
Schedule of amounts recognized in the balance sheet | Amounts recognized in the balance sheet consist of the following:
| December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Current liabilities | $ | 1,223 |  |  | $ | 1,333 |  |  | $ | 1,249 |
Long-term liabilities | 36,259 |  |  | 35,293 |  |  | 35,827 |
| $ | 37,482 |  |  | $ | 36,626 |  |  | $ | 37,076 |
Schedule of amounts recognized in accumulated other comprehensive income | Amounts recognized in accumulated other comprehensive income (loss) consist of the following:
| December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Net actuarial (gain) loss | $ | (2,266 | ) |  | $ | 580 |  |  | $ | 3,408 |
Prior service cost | 704 |  |  | — |  |  | — |
| $ | (1,562 | ) |  | $ | 580 |  |  | $ | 3,408 |
Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Income (Loss)
| Year Ended December 31,
(In thousands) | 2016 |  | 2015 |  | 2014
Components of Net Periodic Postretirement Benefit Cost |  |  |  |  |  |  |  |
Service cost | $ | 2,323 |  |  | $ | 1,808 |  |  | $ | 1,295 |
Interest cost | 1,498 |  |  | 1,448 |  |  | 1,343 |
Amortization of prior service cost | 111 |  |  | — |  |  | — |
Amortization of net loss | — |  |  | — |  |  | (26 | )
Net periodic postretirement cost | $ | 3,932 |  |  | $ | 3,256 |  |  | $ | 2,612 |
Other Changes in Benefit Obligations Recognized in Other Comprehensive Income (Loss) |  |  |  |  |  |  |  |
Net (gain) loss | $ | (2,846 | ) |  | $ | (2,829 | ) |  | $ | 373 |
Prior service cost | 815 |  |  | — |  |  | — |
Amortization of prior service cost | (111 | ) |  | — |  |  | — |
Amortization of net loss | — |  |  | — |  |  | 26 |
Total recognized in other comprehensive income | (2,142 | ) |  | (2,829 | ) |  | 399 |
Total recognized in net periodic benefit cost and other comprehensive income (loss) | $ | 1,790 |  |  | $ | 427 |  |  | $ | 3,011 |
Assumptions to determine projected postretirement benefit obligations and postretirement costs | Assumptions used to determine projected postretirement benefit obligations and postretirement costs are as follows:
| December 31,
| 2016 |  | 2015 |  | 2014
Discount rate(1) | 4.30 | % |  | 4.25 | % |  | 4.00 | %
Health care cost trend rate for medical benefits assumed for next year (pre-65) | 7.50 | % |  | 5.50 | % |  | 6.00 | %
Health care cost trend rate for medical benefits assumed for next year (post-65) | 5.00 | % |  | 5.50 | % |  | 6.00 | %
Ultimate trend rate (pre-65) | 4.50 | % |  | 4.50 | % |  | 4.50 | %
Ultimate trend rate (post-65) | 4.50 | % |  | 4.50 | % |  | 4.50 | %
Year that the rate reaches the ultimate trend rate (pre-65) | 2023 |  |  | 2018 |  |  | 2018 |
Year that the rate reaches the ultimate trend rate (post-65) | 2018 |  |  | 2018 |  |  | 2018 |
_______________________________________________________________________________
(1) | Represents the year end rates used to determine the projected benefit obligation. To compute postretirement cost in 2016, 2015 and 2014, respectively, the beginning of year discount rates of 4.25%, 4.00% and 4.75% were used.
Effect of a one-percentage-point change in assumed health care cost trend rates | Assumed health care cost trend rates may have a significant effect on the amounts reported for the health care plans. A one-percentage-point change in assumed health care cost trend rates would have the following effects:
(In thousands) | 1-Percentage-Point Increase |  | 1-Percentage-Point Decrease
Effect on total of service and interest cost | $ | 968 |  |  | $ | (721 | )
Effect on postretirement benefit obligation | 6,828 |  |  | (5,338 | )
Schedule of estimated benefit payments | The following estimated benefit payments under the Company's postretirement plans, which reflect expected future service, are expected to be paid as follows:
(In thousands) |
2017 | 1,249 |
2018 | 1,344 |
2019 | 1,488 |
2020 | 1,625 |
2021 | 1,708 |
Years 2022 - 2026 | 10,489 |

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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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