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Other Non-Current Liabilities | 12 Months Ended
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Dec. 31, 2017
Other Liabilities Disclosure [Abstract] |
Other Non-Current Liabilities | 15. Other Non-Current Liabilities The composition of other non-current liabilities was as follows:
|  | December 31 |
(In thousands) |  | 2017 |  |  | 2016 |
Deferred revenue |  | $ | 1,539 |  |  | $ | 1,863 |
Environmental and legal matters |  |  | 21,888 |  |  |  | 22,703 |
Deferred compensation liability |  |  | 51,890 |  |  |  | 53,133 |
Pension liability |  |  | 25,632 |  |  |  | 29,494 |
Other non-current liabilities |  |  | 29,484 |  |  |  | 12,160 |
Total other non-current liabilities |  | $ | 130,433 |  |  | $ | 119,353 |

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- Definition The entire disclosure for other liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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