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Leases
 12 Months Ended
Dec. 31, 2022
Leases [Abstract]  
Leases Leases
The Company has long-term, non-cancelable operating leases for campuses and other administrative facilities. These leases generally range from 3 years to 15 years and may include renewal options to extend the lease term. In addition, the leases commonly include lease incentives in the form of rent abatements and tenant improvement allowances. The Company subleases certain portions of unused building space to third parties.
The components of lease costs were as follows for the years ended December 31, 2020, 2021, and 2022 (in thousands)
 202020212022
Lease Cost:
Operating lease cost(1)
$28,337 $53,957 $28,404 
Short-term lease cost534 1,768 641 
Sublease income(2,240)(2,255)(1,135)
Total lease costs$26,631 $53,470 $27,910 
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(1)During the years ended December 31, 2020, 2021 and 2022, operating lease cost includes $0.8 million, $18.9 million, and $1.2 million of right-of-use lease asset impairment charges, respectively, related to redundant leased space that was vacated during the year.
The following table provides a summary of the Company’s average lease term and discount rate as of December 31, 2021 and 2022:
As of December 31, 2021As of December 31, 2022
Weighted average remaining lease term (years)7.87.2
Weighted average discount rate4.01 %4.05 %
Supplemental information related to the Company’s leases for the years ended December 31, 2020, 2021, and 2022 (in thousands):
Year ended December 31, 2020Year ended December 31, 2021Year ended December 31, 2022
Cash paid for amounts included in the measurement of lease liabilities$32,510 $43,021 $35,138 
Right-of-use assets obtained in exchange for operating lease liabilities$12,763 $79,953 $4,674 
Maturities of lease liabilities (in thousands):
Year Ending December 31,
2023$29,704 
202429,128 
202525,316 
202622,744 
202719,802 
Thereafter57,135 
Total lease payments183,829 
Less: interest(25,944)
Present value of lease liabilities$157,885