Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2022

Accounting Policies [Abstract]

Schedule of Property and Equipment Useful lives

Property and equipment are stated at cost and depreciated over their useful lives to their estimated residual values using the straight-line method as follows:

Assets	Depreciable Life	Current Residual Value
Aircraft	7 years	$	50
Rotable parts	7 years		10	%
Spare engines	7 years	$	25
Ground equipment	up to 10 years		0	%
Office equipment	up to 10 years		0	%
Leasehold improvements	Shorter of asset or lease life		0	%

Summary of net unrealized gains and losses for the period that relate to marketable securities

The calculation of net unrealized gains and losses that relate to marketable securities held as of September 30, 2022 is as follows:

	Three Months Ended September 30, 2022			Nine Months Ended September 30, 2022
Net losses recognized during the period on equity securities	$	(3,749	)	$	(9,774	)
Less: Net gains and losses recognized during the period on equity securities sold during the period		—			—
Unrealized losses recognized during the period on equity securities held as of September 30, 2022	$	(3,749	)	$	(9,774	)

The calculation of net unrealized gains and losses that relate to marketable securities held as of September 30, 2021 is as follows:

	Three Months Ended September 30, 2021			Nine Months Ended September 30, 2021
Net gains and losses recognized during the period on equity securities	$	(92	)	$	(106	)
Less: Net losses recognized during the period on equity securities sold during the period		42			1
Unrealized gains recognized during the period on equity securities held as of September 30, 2021	$	(134	)	$	(107	)

Summary of company's classification of Marketable Securities And Long Term Investments

The tables below set forth the Company’s classification of marketable securities and long-term investments as of the periods presented:

	September 30, 2022
	Total		Level 1		Level 2		Level 3
Marketable securities – exchange-traded funds	$	106,087	$	106,087	$	—	$	—
Marketable securities – mutual funds		24,430		24,430		—		—
Long-term investments – bonds (see Note 6)		4,275		—		4,275		—
Total	$	134,792	$	130,517	$	4,275	$	—

	September 30, 2021
	Total		Level 1		Level 2		Level 3
Marketable securities – exchange-traded funds	$	108,097	$	108,097	$	—	$	—
Marketable securities – mutual funds		18,446		18,446		—		—
Long-term investments – bonds (see Note 6)		4,275		—		4,275		—
Total	$	130,818	$	126,543	$	4,275	$	—