Leases (Tables)
 9 Months Ended
Oct. 01, 2021
Leases [Abstract]  
Components of lease expense
The components of lease expense are as follows:
Three Months EndedNine Months Ended
(In thousands)October 1, 2021October 2, 2020October 1, 2021October 2, 2020
Operating lease expense$3,307 $1,349 $7,372 $5,621 
Variable lease expense184 191 599 546 
Short-term lease expense16,630 14,323 47,367 40,483 
Total lease expense$20,121 $15,863 $55,338 $46,650 
Balance sheet information related to leases
Supplemental balance sheet information related to our operating leases is as follows:
(In thousands)October 1, 2021December 31, 2020
Right-of-use assets$43,111 $18,718 
Current lease liabilities (recorded in other accrued liabilities)$11,280 $6,245 
Long-term lease liabilities (recorded in other non-current liabilities)34,308 13,970 
Total operating lease liabilities$45,588 $20,215 
Maturity of lease liabilities
Maturities of lease liabilities at October 1, 2021 were as follows:
(In thousands)Payments due
2021 (excluding the nine months ended October 1, 2021)$3,300 
202212,020 
202311,825 
20247,435 
20253,488 
After 202513,139 
Total minimum lease payments51,207 
Less: Imputed interest(5,619)
Total operating lease liabilities$45,588