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Leases (Tables)
 12 Months Ended
Dec. 31, 2022
Leases [Abstract]  
Components of lease expense The components of lease expenses consist of following (in thousands):
Year Ended December 31,
Lease Cost202220212020
Operating lease cost 1
$37,919 $33,241 $27,825 
Variable lease cost 2
22,084 11,134 1,429 
Total lease cost $60,003 $44,375 $29,254 
1    Includes expense associated with short term leases of less than 12 months which is not material
2    Includes payments related to agreements with embedded leases that are not otherwise reflected on the balance sheet. These costs are primarily associated with our manufacturing supply arrangements and fluctuate based on factory output and material price changes.
Summary of operating lease terms and discount rates
The following table provides a summary of our operating lease terms and discount rates:
December 31,
Remaining Lease Term and Discount Rate20222021
Weighted average remaining lease term (in years)7.27.8
Weighted average discount rate 3.5 %3.2 %
Schedule of operating lease liabilities
As of December 31, 2022, the future payments related to our operating lease liabilities are as follows (in thousands):
Fiscal Year Ending December 31,Operating Leases
2023$30,596 
202424,606 
202519,480 
202616,511 
202713,363 
Thereafter39,449 
Total lease payments144,005 
Less: Imputed interest(17,097)
Total lease liabilities$126,908 
Schedule of property, plant and equipment under operating leases
We lease iTero intraoral scanners to customers which are classified as operating leases. Our portfolio of leased iTero scanners included in Property, plant and equipment, net are as follows:

December 31,
20222021
Scanners under operating leases, gross$22,914 $10,927 
Less: accumulated depreciation(3,919)(785)
Scanners under operating leases, net$18,995 $10,142 
Schedule of lease payments due
As of December 31, 2022, the future lease payments due to us are as follows (in thousands):
Fiscal Year Ending December 31,Operating Leases
2023$15,714 
202413,967 
20256,202 
Total lease payments$35,883