Fixed Assets (Tables)

12 Months Ended

Dec. 31, 2020

Property Plant And Equipment [Abstract]

Summary Of Fixed Assets

The following is a summary of fixed assets as of December 31, 2020 and 2019 (in thousands):

	December 31,
	2020			2019
Office equipment	$	323,841		$	288,975
Leasehold improvements		105,187			120,570
Building		62,803			58,804
Aircraft engine operating leases		—			206,315
		491,831			674,664
Accumulated depreciation and amortization		(323,916	)		(292,499	)
	$	167,915		$	382,165