Subsequent Events (Details - Textuals) - USD ($) $ / shares in Units, $ in Millions	Aug. 01, 2024	Jul. 12, 2024	Jun. 30, 2024	Dec. 31, 2023
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)			$ 0.001	$ 0.001
Subsequent Event [Member] | Private Placement | Embraer Aircraft Holding Inc. (“EAH”)
Subsequent Event [Line Items]
Aggregate gross proceeds from the private placement		$ 95.6
Aggregate gross proceeds from the private placement, net of issuance costs		93.5
Gross proceeds from the private placement		65.6
Gross proceeds receivable from the private placement		$ 30.0
Proceeds from related parties for loans receivables, principal plus interest	$ 85.9
Subsequent Event [Member] | Private Placement | Embraer Aircraft Holding Inc. (“EAH”) | Subscription Agreements
Subsequent Event [Line Items]
Common stock, sale of newly issued shares		23,900,000
Common stock, par value (in dollars per share)		$ 0.001
Purchase price (in dollars per share)		$ 4
Subsequent Event [Member] | Private Placement | Embraer Aircraft Holding Inc. (“EAH”) | Warrant exchange agreements
Subsequent Event [Line Items]
Common Stock, shares issued upon exchange for surrender and cancellation of warrants		3,318,588
Common Stock issuable shares		8,296,470
Subsequent Event [Member] | Private Placement | Embraer Aircraft Holding Inc. (“EAH”) | Warrant exchange agreements | Public Warrants
Subsequent Event [Line Items]
Number of warrants surrendered and cancelled		3,296,470
Subsequent Event [Member] | Private Placement | Embraer Aircraft Holding Inc. (“EAH”) | Warrant exchange agreements | Market Warrants
Subsequent Event [Line Items]
Number of warrants surrendered and cancelled		5,000,000
Subsequent Event [Member] | Private Placement | Embraer Aircraft Holding Inc. (“EAH”) | Warrant agreements
Subsequent Event [Line Items]
Common Stock issuable shares		2,500,000
Common Stock, Exercise price		$ 0.01