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Other Long-Term Liabilities | 9 Months Ended
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Sep. 30, 2019
Other Liabilities Disclosure [Abstract] |
Other Long-Term Liabilities | Other Long-Term Liabilities Other long-term liabilities consisted of the following (in thousands):
| September 30, 2019 |  | December 31, 2018
Deferred compensation plan | $ | 28,376 |  |  | $ | 25,672 |
Supplemental executive retirement plan | 15,681 |  |  | 15,035 |
Operating lease liabilities | 14,124 |  |  | — |
Interest rate swap derivative instrument | 265 |  |  | — |
Other long-term liabilities | 704 |  |  | 2,802 |
Total Other long-term liabilities | $ | 59,150 |  |  | $ | 43,509 |

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- Definition The entire disclosure for other liabilities. + 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 210.5-02.20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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