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Other Long-Term Liabilities
 12 Months Ended
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]  
Other Long-Term Liabilities Other Long-Term Liabilities
Other long-term liabilities consisted of the following (in thousands):
DECEMBER 31,
20202019
Deferred compensation plan$34,501 $30,361 
Supplemental executive retirement plan 20,628 18,080 
Operating lease liabilities14,692 14,627 
Interest rate swap derivative instrument1,774 179 
Other long-term liabilities (1)19,353 651 
Total Other long-term liabilities$90,948 $63,898 
(1) As a result of the application of the CARES Act, we have approximately $19.3 million in payroll tax payments recorded within Other long-term liabilities as of December 31, 2020.