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Accrued Liabilities | 12 Months Ended
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Dec. 31, 2018
Payables and Accruals [Abstract] |
Accrued Liabilities | 8. 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 |
See additional information on net asset adjustments provided in Note 2 — Acquisitions to the Financial Statements.

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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