Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Finance lease cost:
Amortization of right-of-use assets	$ 4,639	$ 10,369	$ 10,307
Interest on lease liabilities	628	1,932	2,373
Operating lease cost	10,722	1,151	891
Sublease income	(1,271)	(1,201)	(1,385)
Total lease cost	$ 14,718	$ 12,251	$ 12,186

Amount of interest expense on finance lease liability.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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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.

+ References

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- Definition

Amount of sublease income excluding finance and operating lease expense.

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