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EMPLOYEE BENEFIT PLANS (Tables)
 12 Months Ended
Dec. 31, 2021
Postemployment Benefits [Abstract]  
Summary of Defined Contribution Plans Expenses Employee benefit plan expenses:
(in thousands)202120202019
U.S. 401(k) Plan$8,879 $8,109 $6,676 
International plans20,780 16,132 13,021 
$29,659 $24,241 $19,697