Commitments and Contingencies - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finance lease cost:
Amortization of right-of-use assets	$ 13,358	$ 10,151	$ 13,999
Interest on lease liabilities	958	890	1,915
Operating lease cost	26,906	15,592	13,159
Short-term lease cost	4,819	689	1,349
Variable lease cost	7,261	4,135	3,565
Sublease income	(1,095)	(782)	(669)
Total lease cost	$ 52,207	$ 30,675	$ 33,318

Amount of interest expense on finance lease liability.

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Amount of amortization expense attributable to right-of-use asset from finance lease.

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Amount of lease cost recognized by lessee for lease contract.

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Amount of operating lease expense. Excludes sublease income.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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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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