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Leases, Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]  
Maturities of Lease Liabilities
As of March 31, 2022, maturities of lease liabilities, excluding short-term leases and leases on a month-to-month basis, were as follows:
(in thousands)Operating Leases
Lease expense
2022 (remaining nine months)$11,228 
202313,347 
202411,264 
20259,301 
20263,427 
2027604 
Thereafter
Total lease payments49,180 
Imputed interest(3,776)
Total leases$45,404 
Sublease income
2022 (remaining nine months)$(448)
2023 and thereafter— 
Total lease payments(448)
Imputed interest
Total sublease income$(445)
Net lease liabilities$44,959 
Weighted average remaining lease term3.7 years
Weighted average discount rate3.98 %

As of December 31, 2021, maturities of lease liabilities, excluding short-term leases and leases on a month-to-month basis, were as follows:
(in thousands)Operating Leases
Lease expense
202214,927 
202313,214 
202411,142 
20259,238 
20263,387 
Thereafter706 
Total lease payments52,614 
Imputed interest(4,030)
Total leases48,584 
Sublease income
2022(896)
2023 and thereafter— 
Total lease payments(896)
Imputed interest11 
Total sublease income(885)
Net lease liabilities47,699 
Weighted average remaining lease term3.9 years
Weighted average discount rate4.01 %