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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - Rocket Lab USA, Inc. - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Deferred tax liabilities: |  |
Right of use asset | $ (6,954) | $ (6,978)
Depreciation and amortization | 0 | (43)
Unrealized gain | (757) | 0
Total deferred tax liabilities | (7,711) | (7,021)
Net deferred tax assets | 2,248 | 1,685
Deferred tax assets: |  |
Accrued expenses | 1,969 | 1,791
Inventories | 353 | 0
Deferred revenue | 5,503 | 2,150
Lease liability | 7,426 | 6,462
Stock options | 2,082 | 1,386
Warrants | 519 | 162
Net operating losses | 30,264 | 23,625
Tax credits | 923 | 857
Other | 4 | 67
Total deferred tax assets | 49,043 | 36,500
Valuation allowance | (39,084) | (27,794)
Total deferred tax assets, net | $ 9,959 | $ 8,706

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