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Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2018
Payables and Accruals [Abstract] |
Schedule Of Accrued Liabilities | Other current liabilities consisted of the following at December 31:
(in thousands) |  | 2018 |  |  | 2017 |
Payroll and incentive compensation |  | $ | 21,641 |  |  | $ | 9,146 |
Net asset adjustments |  |  | 11,210 |  |  |  | — |
Union dues and benefits |  |  | 11,465 |  |  |  | 12,494 |
Profit sharing and thrift plan |  |  | 1,215 |  |  |  | 443 |
Taxes, other than income taxes |  |  | 7,999 |  |  |  | 6,807 |
Other |  |  | 7,828 |  |  |  | 4,843 |
|  | $ | 61,358 |  |  | $ | 33,733 |

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