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OTHER LONG-TERM LIABILITIES (Tables)
 6 Months Ended
Jun. 30, 2021
Other Liabilities Disclosure [Abstract]  
Long-term liabilities
Other long-term liabilities consisted of the following (in thousands):
 June 30, 2021December 31, 2020
Deferred compensation$5,565 $5,818 
Finance lease liabilities441 472 
Other long-term liabilities1,470 1,496 
   Total$7,476 $7,786