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Commitments and Contingencies - Additional Information (Detail) $ in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Feb. 28, 2021 ft² | Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($)
Other Commitments [Line Items] |  |  |
Loss on disposal of property and equipment and leasehold improvements |  | $ (1,894) |
Loss on sublease |  | 1,211 |
Minimum sublease rental income to be received in the future under noncancelable subleases |  | 4,254 |
Rent expense |  | 571 | $ 766
Liability for potential exposure |  | 138 |
Total accrued liability for potential sales tax |  | 1,179 |
Office Sublease [Member] |  |  |
Other Commitments [Line Items] |  |  |
Area of Office Space Subleased | ft² | 37,875 |  |
Lease Expiration Date | Dec. 31, 2024 |  |
Sublease charges |  | 3,367 |
Loss on disposal of property and equipment and leasehold improvements |  | (1,894) |
Loss on sublease |  | 1,211 |
Initial direct costs |  | $ 262 |

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- Definition Costs that are essential to acquiring the lease and would not otherwise have been incurred without the lease agreement, including evaluating the lessee's credit condition, guarantees, and collateral and costs incurred negotiating, processing, and closing the lease agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=121585684&loc=d3e40246-112709 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=121585684&loc=d3e40588-112709 + Details
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