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Summary of Significant Accounting Policies - Summary of Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Detail) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |
Total segments expenses | $ (9,835,736) | $ (1,938,812) | $ (18,950,423) | $ (3,830,463) | $ (13,279,780) | $ (8,358,043) | $ (5,947,294)
General and administrative |  |  |  |  | (2,509,859) | (1,233,876) | (1,739,815)
Loss from operations | (16,348,289) | (2,368,279) | (26,271,742) | (4,587,873) | (15,789,639) | (9,591,919) | (7,687,109)
Foreign currency gain/ (loss) | 563,854 | (46,347) | 986,566 | (43,873) | (77,147) | (34,023) | 1,590
Loss before income taxes | (11,651,910) | (2,414,626) | (21,152,651) | (4,631,746) | (15,866,786) | (9,625,942) | (7,685,519)
Other expenses | 37,123 | 0 | 37,123 | 0 |  |  |
Corporate, Non-Segment [Member] |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |
General and administrative | (3,571,814) | (429,467) | (4,380,580) | (757,410) |  |  |
Selling | (2,903,616) | 0 | (2,903,616) | 0 |  |  |
Other expenses | (37,123) | 0 | (37,123) | 0 |  |  |
eVTOL [Member] |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |
Total segments expenses | (7,599,457) | (1,680,380) | (15,303,608) | (3,391,454) | (11,207,794) | (7,583,456) | (5,255,068)
UATM [Member] |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |
Total segments expenses | (1,365,309) | (258,432) | (2,775,845) | (439,009) | $ (2,071,986) | $ (774,587) | $ (692,226)
Service Support [Member] |  |  |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |  |  |
Total segments expenses | $ (870,970) | $ 0 | $ (870,970) | $ 0 |  |  |

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