Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases
Operating lease option to extend	true
Lease expenses:
Operating leases	$ 18,363	$ 16,223	$ 13,644
Short-term leases	904	1,153	821
Sublease income			(94)
Total lease cost	19,267	17,376	14,371
Payments for operating leases	20,145	16,524	16,167
Upon adoption Accounting Standards Update 2016-02, Leases (Topic 842)			58,713
New leases	28,401	14,128	24,535
Right-of-use assets obtained in exchange for lease obligations	$ 28,401	$ 14,128	$ 83,248
Remaining lease term (in year)	5 years 8 months 12 days	6 years 3 months 18 days	7 years 1 month 6 days
Discount rate (as a percent)	4.00%	4.10%	4.30%
Operating lease liabilities
2022	$ 20,500
2023	21,869
2024	21,900
2025	21,385
2026	16,644
Thereafter	19,536
Total lease payments	121,834
Less imputed interest	(11,831)
Total	$ 110,003	$ 94,193
Minimum
Leases
Remaining operating lease term	1 year
Maximum
Leases
Remaining operating lease term	10 years
Operating lease renewal term	5 years