Leases (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) option	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) option	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Options for renewal | option	1		1
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	$ 106,335		$ 106,335		$ 82,374
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent		us-gaap:AccruedLiabilitiesCurrent		us-gaap:AccruedLiabilitiesCurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent		us-gaap:OtherLiabilitiesNoncurrent		us-gaap:OtherLiabilitiesNoncurrent
Current lease liabilities	$ 15,896		$ 15,896		$ 15,235
Noncurrent lease liabilities	93,507		93,507		69,928
Total lease liabilities	109,403		109,403		85,163
Asset impairments		$ 9,700
Lease, Cost [Abstract]
Operating lease cost	7,349	4,817	19,663	$ 16,387
Variable lease cost	426	436	1,380	1,654
Total lease expense	7,775	5,253	21,043	18,041
Cash paid for amounts included in the measurement of operating lease liabilities			19,198	15,813
Right-of-use assets obtained in exchange for new operating lease liabilities			36,707	$ 6,899
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2020 (excluding the nine months ended September 30, 2020)	5,080		5,080
2021	18,593		18,593		18,449
2022	15,863		15,863		15,070
2023	13,195		13,195		10,647
2024	11,289		11,289		8,894
Thereafter	67,451		67,451
2024					7,037
Thereafter					44,284
Total lease payments	131,471		131,471		104,381
Less: Imputed interest	(22,068)		(22,068)		(19,218)
Legally binding minimum lease payments for leases signed but not yet commenced	200		200
Building right-of-use asset
Assets and Liabilities, Lessee [Abstract]
Asset impairments		$ 600
Building
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	100,904		100,904		75,381
Equipment
Assets and Liabilities, Lessee [Abstract]
Total right-of-use assets - net	$ 5,431		$ 5,431		$ 6,993
Building and Equipment
Lease, Cost [Abstract]
Weighted-average remaining lease term (years): Operating leases	9 years 7 months 24 days		9 years 7 months 24 days		9 years 7 months 9 days
Weighted-average discount rate: Operating leases	3.57%		3.57%		4.08%
Vehicles
Lease, Cost [Abstract]
Weighted-average remaining lease term (years): Operating leases	2 years 3 days		2 years 3 days		1 year 11 months 1 day
Weighted-average discount rate: Operating leases	2.51%		2.51%		2.99%