Leases (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) Option	Sep. 30, 2020 USD ($)	Dec. 31, 2020
Lessee, Lease, Description [Line Items]
Finance lease liability	$ 2,438		$ 2,438
Variable lease expense and short-term lease expenses			$ 5,700	$ 6,100
Weighted average discount rate for operating leases	4.10%		4.10%		4.20%
Operating lease expense	$ 7,700	$ 8,000	$ 22,100	21,400
Weighted average remaining lease term	7 years 7 months 6 days		7 years 7 months 6 days		7 years 6 months
Rent paid to related parties	$ 1,100	$ 2,000	$ 3,600	$ 4,500
Existence of option to extend			true
Minimum
Lessee, Lease, Description [Line Items]
Lease term for operating lease	3 years		3 years
Number of options to renew | Option			1
Maximum
Lessee, Lease, Description [Line Items]
Lease term for operating lease	10 years		10 years