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Other Long-Term Liabilities
 12 Months Ended
Dec. 31, 2019
Other Liabilities Disclosure [Abstract]  
Other Long-Term Liabilities Other Long-Term Liabilities
Other long-term liabilities consisted of the following (in thousands):
DECEMBER 31,
20192018
Deferred compensation plan$30,361  $25,672  
Supplemental executive retirement plan 18,080  15,035  
Operating lease liabilities14,627  —  
Interest rate swap derivative instrument179  —  
Other long-term liabilities 651  4,161  
Total Other long-term liabilities$63,898  $44,868