Leases - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) Lease	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease right-of-use lease assets	$ 25,804	$ 27,489
Two New Office Leases
Lessee, Lease, Description [Line Items]
Operating lease right-of-use lease assets	100
Operating lease, liability	$ 100
Number of new leases | Lease	2
New Lease for Office in North Bethesda
Lessee, Lease, Description [Line Items]
New lease term of contract	7 years
Cash rental payment	$ 7,100