Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Components of Property and Equipment

Property and equipment consist of the following:

	As of December 31,
	2018			2017
	(in thousands)
Aircraft	$	—		$	19,260
Equipment	21,451			20,930
Furniture and fixtures	7,684			7,639
Leasehold improvements	23,082			22,847
	52,217			70,676
Less accumulated depreciation and amortization	(45,032		)	(62,074		)
Total property and equipment, net	$	7,185		$	8,602