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Leases (Tables)
9 Months Ended
Sep. 30, 2021
Leases [Abstract]  
Components of Lease Cost The components of lease cost were as follows:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2021202020212020
Operating lease cost$11,280 $8,343 $31,695 $24,319 
Short-term lease cost1,247 475 3,122 1,744 
Variable lease cost923 553 2,354 1,700 
Total lease cost$13,450 $9,371 $37,171 $27,763