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Leases (Tables)
9 Months Ended
Sep. 30, 2022
Leases [Abstract]  
Components of Lease Expense
The components of lease expense were as follows (U.S. dollars in thousands):

 
Three Months Ended
September 30,
   
Nine Months Ended
September 30,
 
   
2022
   
2021
   
2022
   
2021
 
Operating lease expense
                       
Operating lease cost
 
$
9,479
   
$
12,193
   
$
30,179
   
$
37,408
 
Variable lease cost
   
1,572
     
1,121
     
4,223
     
4,145
 
Short-term lease cost
   
84
     
13
     
181
     
590
 
Sublease income
   
     
(1,352
)
   
   
(5,164
)
Finance lease expense
                               
Amortization of right-of-use assets
   
530
     
594
     
1,632
     
1,811
 
Interest on lease liabilities
   
53
     
77
     
178
     
248
 
 Total lease expense
 
$
11,718
   
$
12,646
   
$
36,393
   
$
39,038
 
Supplemental Cash Flow Information Related to Leases
Supplemental cash flow information related to leases was as follows (U.S. dollars in thousands):

 
Nine Months Ended
September 30,
 
   
2022
   
2021
 
Operating cash outflow from operating leases
 
$
28,880
   
$
40,072
 
Operating cash outflow from finance leases
 
$
170
   
$
250
 
Financing cash outflow from finance leases
 
$
1,401
   
$
1,409
 
Right-of-use assets obtained in exchange for operating lease obligations
 
$
28,785
   
$
19,120
 
Right-of-use assets obtained in exchange for finance lease obligations
 
$
203
   
$
59
 
Maturities of Lease Liabilities
Maturities of lease liabilities were as follows (U.S. dollars in thousands):

Year Ending December 31
 
Operating
Leases
   
Finance
Leases
 
2022
 
$
9,453
   
$
505
 
2023
   
26,680
     
1,884
 
2024
   
19,671
     
1,688
 
2025
   
13,775
     
1,209
 
2026
   
8,127
     
264
 
Thereafter
   
46,139
     
4
 
Total
   
123,845
     
5,554
 
Less: Finance charges
   
16,736
     
319
 
Total principal liability
 
$
107,109
   
$
5,235