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OTHER LONG-TERM LIABILITIES (Tables)
 9 Months Ended
Sep. 30, 2021
Other Liabilities Disclosure [Abstract]  
Long-term liabilities
Other long-term liabilities consisted of the following (in thousands):
 September 30, 2021December 31, 2020
Deferred compensation$5,407 $5,818 
Finance lease liabilities389 472 
Other long-term liabilities1,453 1,496 
   Total$7,249 $7,786