Leases (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Operating Lease Cost
Operating lease expense	$ 4,886	$ 3,743
2022 (excluding the three months ended March 31, 2022)	11,865
2023	17,077
2024	16,491
2025	16,378
2026	15,651
Thereafter	58,413
Total undiscounted lease payments	135,875
Adjustment to discount to present value	(22,941)
Operating lease liabilities	112,934		$ 100,303
Leases not yet commenced, amount	$ 13,200
Weighted average discount rate	4.20%	4.60%
Weighted average remaining lease term (in years)	9 years 2 months 12 days	6 years 8 months 12 days
Operating cash flows for operating leases	$ 4,432	$ 4,149
Compensation and benefits
Operating Lease Cost
Operating lease expense	131	127
Occupancy
Operating Lease Cost
Operating lease expense	4,597	3,546
Variable Lease, Cost	(42)	(78)
Short-term lease cost	178	81
Sublease income	(100)	0
Communication and technology
Operating Lease Cost
Operating lease expense	$ 38	$ 67

Lessee, Operating Lease, Lease Not Yet Commenced, Amount

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Lessee, Operating Lease, Liability, To Be Paid, After Year Four

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Amount of lessee's undiscounted obligation for lease payment for operating lease.

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of sublease income excluding finance and operating lease expense.

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Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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