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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Undiscounted Minimum Rental Commitments Under Non-cancelable Leases
As of December 31, 2021, undiscounted minimum rental commitments under non-cancelable leases, for each of the next five years and total thereafter are as follows:
Operating
Leases		Lease Payments
to be Received
from Sublease		Net Operating
Lease Payments
 (in thousands)  
2022$7,328 $1,824 $5,504 
20236,955 307 6,648 
20248,167 — 8,167 
20258,293 — 8,293 
20266,571 — 6,571 
Thereafter12,200 — 12,200 
Total$49,514 $2,131 $47,383 
Difference Between Undiscounted Minimum Rental Commitments Under Non-cancelable Leases and Operating Leases Liabilities As of December 31, 2021, the following represents the difference between the remaining undiscounted minimum rental commitments under non-cancelable leases and the operating lease liabilities:
 Operating
Leases
 (in thousands)
 Total
Undiscounted minimum rental commitments$49,514 
Present value adjustment using incremental borrowing rate(10,673)
Operating lease liabilities$38,841