Leases (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) option	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) option	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Options for renewal | option	1		1
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	$ 110,920		$ 110,920		$ 106,586
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other noncurrent liabilities		Other noncurrent liabilities		Other noncurrent liabilities
Current lease liabilities	$ 17,597		$ 17,597		$ 16,721
Noncurrent lease liabilities	96,927		96,927		94,250
Total lease liabilities	114,524		114,524		110,971
Lease, Cost [Abstract]
Operating lease cost	9,258	$ 7,349	23,754	$ 19,663
Variable lease cost	730	426	1,903	1,380
Total lease expense	9,988	$ 7,775	25,657	21,043
Cash paid for amounts included in the measurement of operating lease liabilities			23,134	19,198
Right-of-use assets obtained in exchange for new operating lease liabilities			13,853	$ 36,707
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2021 (excluding the nine months ended September 30, 2021)	5,105		5,105
2022	19,884		19,884		19,717
2023	18,014		18,014		17,014
2024	15,130		15,130		13,662
2025	13,403		13,403		11,681
Thereafter	60,478		60,478
2025					11,141
Thereafter					57,570
Total lease payments	132,014		132,014		130,785
Less: Imputed interest	$ (17,490)		$ (17,490)		$ (19,814)
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued expenses		Accrued expenses		Accrued expenses
Building
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	$ 104,601		$ 104,601		$ 100,775
Equipment
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	$ 6,319		$ 6,319		$ 5,811
Building and Equipment
Lease, Cost [Abstract]
Weighted-average remaining lease term (years): Operating leases	8 years 7 months 24 days		8 years 7 months 24 days		9 years 5 months 4 days
Weighted-average discount rate: Operating leases	3.27%		3.27%		3.51%
Vehicles
Lease, Cost [Abstract]
Weighted-average remaining lease term (years): Operating leases	2 years 3 months		2 years 3 months		2 years 3 days
Weighted-average discount rate: Operating leases	1.30%		1.30%		2.05%