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OTHER LONG-TERM LIABILITIES (Tables)
 3 Months Ended
Mar. 31, 2021
Other Liabilities Disclosure [Abstract]  
Long-term liabilities
Other long-term liabilities consisted of the following (in thousands):
 March 31, 2021December 31, 2020
Deferred compensation$5,533 5,818 
Finance lease liabilities452 472 
Other long-term liabilities1,486 1,496 
   Total$7,471 $7,786