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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

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 Original Cost of Company's Fixed Assets and Accumulated Depreciation

The table below sets forth the original cost of the Company’s fixed assets and accumulated depreciation as of the dates presented. The table excludes construction in process of $

2,237

and $

3,573

for the years ended December 31, 2022 and December 31, 2021, respectively.


For the years ended:	December 31, 2022				December 31, 2021
Assets	Original Cost		Accumulated Depreciation/ Amortization		Original Cost		Accumulated Depreciation/ Amortization
Aircraft		70,089		40,544		70,178		31,319
Engines		163,708		103,834		157,510		86,339
Rotable parts		27,936		18,655		28,459		18,834
Ground equipment		2,718		2,063		2,555		1,868
Office equipment		4,519		4,218		4,509		4,130
Leasehold improvements		818		452		1,188		823

		269,788		169,766		264,399		143,313

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 December 31, 2022 and December 31, 2021 is as follows:


	Year Ended December 31, 2022			Year Ended December 31, 2021

Net losses recognized during the period on equity securities	$	(8,826	)	$	(1,158	)
Less: Net gains recognized during the period on equity securities sold during the period		—			2

Unrealized losses recognized during the period on equity securities held as of the end of the period	$	(8,826	)	$	(1,160	)

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 dates presented:


	December 31, 2022
	Total		Level 1		Level 2		Level 3
Marketable securities – exchange-traded funds	$	109,178	$	109,178	$	—	$	—
Marketable securities – mutual funds		44,649		44,649		—		—
Long-term investments – bonds (see Note 6)		4,275		—		4,275		—

Total	$	158,102	$	153,827	$	4,275	$	—


	December 31, 2021
	Total		Level 1		Level 2		Level 3
Marketable securities – exchange-traded funds	$	113,936	$	113,936	$	—	$	—
Marketable securities – mutual funds		24,434		24,434		—		—
Long-term investments – bonds (see Note 6)		4,275		—		4,275		—

Total	$	142,645	$	138,370	$	4,275	$	—