| Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] | |
Obligation and funded status of the pension and postretirement benefit plans | Following are the details of the obligation and funded status of the pension and postretirement benefit plans: | | | | | | | | | | | | | | | | | (in thousands) | Pension Benefits | | Postretirement Benefits | Change in benefit obligation | 2016 | | 2015 | | 2016 | | 2015 | Benefit obligation at beginning of year | $ | 8,677 |
| | $ | 133,984 |
| | $ | 39,152 |
| | $ | 42,300 |
| Service cost | — |
| | 236 |
| | 760 |
| | 900 |
| Interest cost | 194 |
| | 182 |
| | 1,549 |
| | 1,584 |
| Actuarial (gains) losses | (421 | ) | | (6,299 | ) | | (10,823 | ) | | (4,762 | ) | Participant contributions | — |
| | — |
| | 653 |
| | 535 |
| Retiree drug subsidy received | — |
| | — |
| | 5 |
| | 138 |
| Benefits paid | (1,338 | ) | | (119,426 | ) | | (1,539 | ) | | (1,543 | ) | Benefit obligation at end of year | $ | 7,112 |
| | $ | 8,677 |
| | $ | 29,757 |
| | $ | 39,152 |
|
| | | | | | | | | | | | | | | | | (in thousands) | Pension Benefits | | Postretirement Benefits | Change in plan assets | 2016 | | 2015 | | 2016 | | 2015 | Fair value of plan assets at beginning of year | $ | 285 |
| | $ | 116,041 |
| | $ | — |
| | $ | — |
| Actual gains on plan assets | — |
| | 517 |
| | — |
| | — |
| Company contributions | 1,053 |
| | 3,153 |
| | 886 |
| | 1,008 |
| Participant contributions | — |
| | — |
| | 653 |
| | 535 |
| Benefits paid | (1,338 | ) | | (119,426 | ) | | (1,539 | ) | | (1,543 | ) | Fair value of plan assets at end of year | $ | — |
| | $ | 285 |
| | $ | — |
| | $ | — |
| | | | | | | | | Under funded status of plans at end of year | $ | (7,112 | ) | | $ | (8,392 | ) | | $ | (29,757 | ) | | $ | (39,152 | ) |
|
Amounts recognized in the Consolidated Balance Sheets | Amounts recognized in the Consolidated Balance Sheets at December 31, 2016 and 2015 consist of: | | | | | | | | | | | | | | | | | | Pension Benefits | | Postretirement Benefits | (in thousands) | 2016 | | 2015 | | 2016 | | 2015 | Accrued expenses | $ | (1,295 | ) | | $ | (1,051 | ) | | $ | (1,148 | ) | | $ | (1,247 | ) | Employee benefit plan obligations | (5,817 | ) | | (7,341 | ) | | (28,609 | ) | | (37,905 | ) | Net amount recognized | $ | (7,112 | ) | | $ | (8,392 | ) | | $ | (29,757 | ) | | $ | (39,152 | ) |
|
Pre-tax amounts recognized in accumulated other comprehensive loss | Following are the details of the pre-tax amounts recognized in accumulated other comprehensive loss at December 31, 2016: | | | | | | | | | | | | | | | | | | Pension Benefits | | Postretirement Benefits | (in thousands) | Unamortized Actuarial Net Losses | | Unamortized Prior Service Costs | | Unamortized Actuarial Net Losses | | Unamortized Prior Service Costs | Balance at beginning of year | $ | 4,811 |
| | $ | — |
| | $ | 11,988 |
| | $ | (355 | ) | Amounts arising during the period | (421 | ) | | — |
| | (10,823 | ) | | — |
| Amounts recognized as a component of net periodic benefit cost | (146 | ) | | — |
| | (768 | ) | | 355 |
| Balance at end of year | $ | 4,244 |
| | $ | — |
| | $ | 397 |
| | $ | — |
|
|
Amounts in accumulated other comprehensive loss expected to be recognized as components of net periodic benefit cost | The amounts in accumulated other comprehensive loss that are expected to be recognized as components of net periodic benefit cost during the next fiscal year, excluding the impact of the pension termination, are as follows: | | | | | | | | | | | | | (in thousands) | Pension | | Postretirement | | Total | Prior service cost | $ | — |
| | $ | (355 | ) | | $ | (355 | ) | Net actuarial loss | 146 |
| | 768 |
| | 914 |
|
|
Amounts applicable to the Company's defined benefit plans with accumulated benefit obligations in excess of plan assets | Amounts applicable to the Company's defined benefit plans with accumulated benefit obligations in excess of plan assets are as follows: | | | | | | | | | | December 31, | (in thousands) | 2016 | | 2015 | Projected benefit obligation | $ | 7,112 |
| | $ | 8,392 |
| Accumulated benefit obligation | $ | 7,112 |
| | $ | 8,392 |
|
|
Defined benefit plan estimated future benefit payments | The combined benefits expected to be paid for all Company defined benefit plans over the next ten years (in thousands) are as follows: | | | | | | | | | | | | | | Year | | Expected Pension Benefit Payout | | Expected Postretirement Benefit Payout | | Medicare Part D Subsidy | 2017 | | $ | 1,295 |
| | $ | 987 |
| | $ | (161 | ) | 2018 | | 1,368 |
| | 1,006 |
| | (177 | ) | 2019 | | 1,405 |
| | 1,020 |
| | (194 | ) | 2020 | | 1,289 |
| | 1,039 |
| | (213 | ) | 2021 | | 1,180 |
| | 1,057 |
| | (232 | ) | 2022-2026 | | 1,101 |
| | 6,203 |
| | (1,134 | ) |
|
Components of the net periodic benefit cost | Following are components of the net periodic benefit cost for each year: | | | | | | | | | | | | | | | | | | | | | | | | | | Pension Benefits | | Postretirement Benefits | | December 31, | | December 31, | (in thousands) | 2016 | | 2015 | | 2014 | | 2016 | | 2015 | | 2014 | Service cost | $ | — |
| | $ | 236 |
| | $ | 180 |
| | $ | 760 |
| | $ | 900 |
| | $ | 687 |
| Interest cost | 194 |
| | 182 |
| | 4,774 |
| | 1,549 |
| | 1,584 |
| | 1,511 |
| Expected return on plan assets | — |
| | — |
| | (7,615 | ) | | (355 | ) | | (543 | ) | | (543 | ) | Recognized net actuarial loss | 146 |
| | 1,516 |
| | 934 |
| | 768 |
| | 1,517 |
| | 812 |
| Benefit cost (income) | $ | 340 |
| | $ | 1,934 |
| | $ | (1,727 | ) | | $ | 2,722 |
| | $ | 3,458 |
| | $ | 2,467 |
|
|
Schedule of assumptions used | Following are weighted average assumptions of pension and postretirement benefits for each year: | | | | | | | | | | | | | | | | | | | Pension Benefits | | Postretirement Benefits | | 2016 | | 2015 | | 2014 | | 2016 | | 2015 | | 2014 | Used to Determine Benefit Obligations at Measurement Date | | | | | | | | | | | | Discount rate (a) | N/A | | N/A |
| | 0.65 | % | | 4.0 | % | | 4.2 | % | | 3.9 | % | Used to Determine Net Periodic Benefit Cost for Years ended December 31 | | | | | | | | | | | | Discount rate (b) | N/A | | 0.65 | % | | 4.7 | % | | 4.2 | % | | 3.9 | % | | 4.8 | % | Expected long-term return on plan assets | N/A | | N/A |
| | 7 | % | | — |
| | — |
| | — |
| Rate of compensation increases | N/A | | N/A |
| | N/A |
| | — |
| | — |
| | — |
|
| | (a) | In 2014, the calculated discount rate for the unfunded pension plan was different than the defined benefit pension plan. The calculated rate for the unfunded employee retirement plan was 2.40%, 2.60% and 2.40% in 2016, 2015 and 2014, respectively. Since it was terminated in 2015, the defined benefit pension plan did not have a discount rate in 2015 or 2016. |
| | (b) | In 2015 and 2014, the calculated discount rate for the unfunded pension plan was different than the defined benefit pension plan. The calculated rate for the unfunded employee retirement plan was 2.60%, 2.40% and 2.90% in 2016, 2015 and 2014, respectively. Since it was terminated in 2015, the defined benefit pension plan did not have a discount rate in 2015 or 2016. |
|
Assumed health care cost trend rates at beginning of year | | | | | | | | Assumed Health Care Cost Trend Rates at Beginning of Year | | | | | 2016 | | 2015 | Health care cost trend rate assumed for next year | 5.0 | % | | 5.5 | % | Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) | 5.0 | % | | 5.0 | % | Year that the rate reaches the ultimate trend rate | 2017 |
| | 2017 |
|
|
Assumed health care cost trend rate has an effect on the amounts reported for postretirement benefits | The assumed health care cost trend rate has an effect on the amounts reported for postretirement benefits. A one-percentage-point change in the assumed health care cost trend rate would have the following effects: | | | | | | | | | | One-Percentage-Point | | Increase | | Decrease | Effect on total service and interest cost components in 2016 | $ | (3,803 | ) | | $ | 3,182 |
| Effect on postretirement benefit obligation as of December 31, 2016 | (130,198 | ) | | 113,429 |
|
|