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OTHER LONG-TERM LIABILITIES (Tables)
 12 Months Ended
Dec. 31, 2018
Other Liabilities Disclosure [Abstract]  
Other long-term liabilities
Other long-term liabilities consisted of the following at December 31, 2018 and 2017 (in thousands):
 
December 31,
 
2018
 
2017
Deferred rent
$
5,122

 
$
2,970

Accrued restructuring
188

 
731

Deferred compensation
4,992

 
5,546

Total
$
10,302

 
$
9,247