| Compensation and Retirement Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Compensation and Retirement Disclosure [Abstract] | |
Schedule Of Defined Benefit Pension Plans And Other Postretirement Benefits Plan | Information pertaining to defined benefit pension plans and other post-retirement benefits plans is provided in the following table: | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Benefits | (In thousands) | 2016 | | 2015 | | 2016 | | 2015 | Change in Benefit Obligations | | | | | | | | Benefit obligations at January 1 | $ | 491,180 |
| | $ | 519,194 |
| | $ | 22,974 |
| | $ | 26,851 |
| Service cost | 10,417 |
| | 11,517 |
| | 426 |
| | 444 |
| Interest cost | 18,752 |
| | 18,314 |
| | 946 |
| | 863 |
| Participant contributions | 100 |
| | 105 |
| | 222 |
| | 255 |
| Plan amendments | (1,092 | ) | | 604 |
| | (400 | ) | | — |
| Actuarial (gains) losses | 9,123 |
| | (21,073 | ) | | 1,285 |
| | (3,998 | ) | Benefits paid | (19,550 | ) | | (19,261 | ) | | (1,773 | ) | | (1,441 | ) | Curtailments | (163 | ) | | — |
| | — |
| | — |
| Settlements | (381 | ) | | (2,094 | ) | | — |
| | — |
| Currency translation | (4,389 | ) | | (16,126 | ) | | — |
| | — |
| Benefit obligations at December 31 | 503,997 |
| | 491,180 |
| | 23,680 |
| | 22,974 |
| Change in Plan Assets | | | | | | | | Fair value of plan assets at January 1 | 419,088 |
| | 445,299 |
| | — |
| | — |
| Actual return on plan assets | 31,418 |
| | (4,754 | ) | | — |
| | — |
| Employer contributions | 3,878 |
| | 4,058 |
| | 1,551 |
| | 1,186 |
| Participant contributions | 100 |
| | 105 |
| | 222 |
| | 255 |
| Settlements | (381 | ) | | (2,094 | ) | | — |
| | — |
| Benefits paid | (19,550 | ) | | (16,979 | ) | | (1,773 | ) | | (1,441 | ) | Reimbursement of German benefits | — |
| | (2,282 | ) | | — |
| | — |
| Administrative Expenses Paid | — |
| | 6 |
| | — |
| | — |
| Currency translation | (1,291 | ) | | (4,271 | ) | | — |
| | — |
| Fair value of plan assets at December 31 | 433,262 |
| | 419,088 |
| | — |
| | — |
| Funded Status | | | | | | | | Funded status at December 31 | (70,735 | ) | | (72,092 | ) | | (23,680 | ) | | (22,974 | ) | Unrecognized transition losses | 8 |
| | 12 |
| | — |
| | — |
| Unrecognized prior service (credit) cost | (646 | ) | | 525 |
| | (1,505 | ) | | (1,524 | ) | Unrecognized net actuarial losses | 187,738 |
| | 188,531 |
| | 3,643 |
| | 2,117 |
| Net amount recognized | 116,365 |
| | 116,976 |
| | (21,542 | ) | | (22,381 | ) | Amounts Recognized in the Balance Sheet | | | | | | | | Noncurrent assets | 62,916 |
| | 62,072 |
| | — |
| | — |
| Current liabilities | (4,620 | ) | | (5,033 | ) | | (1,638 | ) | | (1,382 | ) | Noncurrent liabilities | (129,031 | ) | | (129,131 | ) | | (22,042 | ) | | (21,592 | ) | Net amount recognized | (70,735 | ) | | (72,092 | ) | | (23,680 | ) | | (22,974 | ) | Amounts Recognized in Accumulated Other Comprehensive Loss | | | | | | | | Net actuarial losses | 187,738 |
| | 188,531 |
| | 3,643 |
| | 2,425 |
| Prior service (credit) cost | (646 | ) | | 525 |
| | (1,505 | ) | | (1,523 | ) | Unrecognized net initial obligation | 8 |
| | 12 |
| | — |
| | — |
| Total (before tax effects) | 187,100 |
| | 189,068 |
| | 2,138 |
| | 902 |
| Accumulated Benefit Obligations for all Defined Benefit Plans | 465,448 |
| | 453,382 |
| | — |
| | — |
|
|
Components Of Net Periodic Benefit (Credit) Cost | | | | | | | | | | | | | | | | | | | | | | | | | | | Pension Benefits | | Other Benefits | (In thousands) | 2016 | | 2015 | | 2014 | | 2016 | | 2015 | | 2014 | Components of Net Periodic Benefit Cost | | | | | | | | | | | | Service cost | $ | 10,417 |
| | $ | 11,517 |
| | $ | 9,425 |
| | $ | 426 |
| | $ | 444 |
| | $ | 538 |
| Interest cost | 18,752 |
| | 18,314 |
| | 19,340 |
| | 946 |
| | 863 |
| | 1,107 |
| Expected return on plan assets | (34,751 | ) | | (34,130 | ) | | (32,944 | ) | | — |
| | — |
| | — |
| Amortization of transition amounts | 2 |
| | 2 |
| | 2 |
| | — |
| | — |
| | — |
| Amortization of prior service (credit) cost | (14 | ) | | 66 |
| | 84 |
| | (419 | ) | | (335 | ) | | (335 | ) | Recognized net actuarial losses | 11,921 |
| | 15,545 |
| | 8,639 |
| | 68 |
| | 27 |
| | 182 |
| Settlement loss | 5 |
| | 641 |
| | 290 |
| | — |
| | — |
| | — |
| Termination benefits | — |
| | — |
| | — |
| | — |
| | — |
| | — |
| Net periodic benefit cost | $ | 6,332 |
| | $ | 11,955 |
| | $ | 4,836 |
| | $ | 1,021 |
| | $ | 999 |
| | $ | 1,492 |
|
|
Schedule Of Amounts Included In Accumulated Other Comprehensive Income Expected To Be Recognized In Net Periodic Benefit Costs | Amounts included in accumulated other comprehensive income expected to be recognized in 2017 net periodic benefit costs. | | | | | | | | | (In thousands) | Pension Benefits | | Other Benefits | Loss recognition | $ | 12,255 |
| | $ | 103 |
| Prior service credit recognition | (15 | ) | | (288 | ) | Transition obligation recognition | 1 |
| | — |
|
|
Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block] | Information for pension plans with an accumulated benefit obligation in excess of plan assets. | | | | | | | | | (In thousands) | 2016 | | 2015 | Aggregate accumulated benefit obligations (ABO) | $ | 147,531 |
| | $ | 147,864 |
| Aggregate projected benefit obligations (PBO) | 160,543 |
| | 161,009 |
| Aggregate fair value of plan assets | 26,986 |
| | 26,844 |
|
|
Schedule Of Assumptions Used To Determine Benefit Obligations And Net Periodic Benefit Cost | | | | | | | | | | | | | | | Pension Benefits | | Other Benefits | | 2016 | | 2015 | | 2016 | | 2015 | Assumptions used to determine benefit obligations | | | | | | | | Average discount rate | 3.67 | % | | 3.92 | % | | 4.05 | % | | 4.20 | % | Rate of compensation increase | 2.99 | % | | 3.06 | % | | — |
| | — |
| Assumptions used to determine net periodic benefit cost | | | | | | | | Average discount rate | 3.92 | % | | 3.63 | % | | 4.20 | % | | 3.85 | % | Expected return on plan assets | 8.18 | % | | 8.17 | % | | — |
| | — |
| Rate of compensation increase | 3.06 | % | | 3.03 | % | | — |
| | — |
|
|
Schedule Of Expected Return On Assets For Net Periodic Pension Cost | | | | | | | | | Pension Plan Assets at December 31, | | 2016 | | 2015 | Equity securities | 70 | % | | 67 | % | Fixed income securities | 20 |
| | 24 |
| Pooled investment funds | 5 |
| | 5 |
| Insurance contracts | 4 |
| | 3 |
| Cash and cash equivalents | 1 |
| | 1 |
| Total | 100 | % | | 100 | % |
|
Summary Of Pension Plan Assets Measured At Fair Value On A Recurring Basis By Fair Value Hierarchy | The following table summarizes our pension plan assets measured at fair value on a recurring basis by fair value hierarchy level (See Note 18): | | | | | | | | | | | | | | | | | | December 31, 2016 | (In thousands) | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total Fair Value | Equity securities | $ | 242,161 |
| | $ | 62,299 |
| | $ | — |
| | $ | 304,460 |
| Fixed income securities | 25,109 |
| | 62,667 |
| | — |
| | 87,776 |
| Pooled investment funds | — |
| | 20,156 |
| | — |
| | 20,156 |
| Insurance contracts | — |
| | — |
| | 14,948 |
| | 14,948 |
| Cash and cash equivalents | 5,922 |
| | — |
| | — |
| | 5,922 |
| Total | $ | 273,192 |
| | $ | 145,122 |
| | $ | 14,948 |
| | $ | 433,262 |
|
| | | | | | | | | | | | | | | | | | December 31, 2015 | (In thousands) | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total Fair Value | Equity securities | $ | 225,191 |
| | $ | 55,428 |
| | $ | — |
| | $ | 280,619 |
| Fixed income securities | 29,903 |
| | 70,164 |
| | — |
| | 100,067 |
| Pooled investment funds | — |
| | 19,345 |
| | — |
| | 19,345 |
| Insurance contracts | — |
| | — |
| | 13,681 |
| | 13,681 |
| Cash and cash equivalents | 5,376 |
| | — |
| | — |
| | 5,376 |
| Total | $ | 260,470 |
| | $ | 144,937 |
| | $ | 13,681 |
| | $ | 419,088 |
|
|
Schedule Of Reconciliation Of Level 3 Assets | The following table presents a reconciliation of Level 3 assets: | | | | | | | | | (In thousands) | Insurance Contracts | | Other | Balance January 1, 2015 | $ | 15,069 |
| | $ | 753 |
| Net realized and unrealized losses included in earnings | (1,526 | ) | | (64 | ) | Net purchases, issuances and settlements | 138 |
| | (184 | ) | Transfers out of Level 3
| — |
| | (505 | ) | Balance December 31, 2015 | 13,681 |
| | — |
| Net realized and unrealized gains included in earnings | 975 |
| | — |
| Net purchases, issuances and settlements | 292 |
| | — |
| Transfers out of Level 3 | — |
| | — |
| Balance December 31, 2016 | $ | 14,948 |
| | $ | — |
|
|