Leases - Components of lease expense, and lease assets and liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Lease Cost:
Amortization of right-of-use assets (included in depreciation expense)	$ 24	$ 202	$ 48	$ 396
Interest on lease liabilities	7	83	15	175
Operating lease cost	4,425	3,802	8,699	7,596
Short-term lease cost	64	101	144	191
Variable lease cost	473	447	942	914
Total lease cost	4,993	$ 4,635	9,848	9,272
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for finance lease			15	194
Operating cash flows used for operating leases			9,328	8,372
Financing cash flows used for finance lease			82	793
Right-of-use assets obtained in exchange for new operating lease liabilities			10,683	$ 15,819
Assets and Liabilities, Lessee [Abstract]
Finance lease right-of-use assets (included in other assets)	$ 712		$ 712		$ 760
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets, net		Other assets, net		Other assets, net
Operating lease right-of-use assets	$ 98,580		$ 98,580		$ 99,158
Finance lease liability, current (included in current installments of long-term debt)	$ 169		$ 169		$ 165
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Current installments of long-term debt		Current installments of long-term debt		Current installments of long-term debt
Finance lease liability, noncurrent (included in long-term debt)	$ 443		$ 443		$ 529
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Long-term debt, less current installments		Long-term debt, less current installments		Long-term debt, less current installments
Operating lease liabilities, current (included in accrued liabilities)	$ 12,359		$ 12,359		$ 13,465
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accrued liabilities		Accrued liabilities		Accrued liabilities
Operating lease liabilities, noncurrent	$ 90,936		$ 90,936		$ 90,878
Weighted average remaining lease term – finance leases	3 years 4 months 24 days		3 years 4 months 24 days		3 years 10 months 24 days
Weighted average remaining lease term – operating leases	10 years 1 month 6 days		10 years 1 month 6 days		10 years
Weighted average discount rate – finance leases	4.80%		4.80%		4.80%
Weighted average discount rate – operating leases	4.10%		4.10%		4.10%