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Commitments and Contingencies - Summary of Maturities of Sublease Income and Operating Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Sublease Income
2021	$ 5,201
2022	5,357
2023	5,518
2024	5,684
2025	5,854
Thereafter	33,742
Total	61,356
Operating Lease Liabilities
2021	6,942
2022	6,268
2023	5,403
2024	5,547
2025	5,696
Thereafter	30,760
Total	60,616
Present value adjustment	(22,580)
Total	$ 38,036	$ 40,884

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Lessor sublease rentals payments to be received due year four.

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Lessor sublease rentals payments to be received due year three

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Lessor sublease rentals payments to be received due year two.

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Lessor sublease rentals payments to be received next twelve months.

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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth 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 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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