Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill by Operating Segment

Changes in goodwill for the years ended December 31, 2018 and 2017 are as follows (in thousands):

	Supply Chain Management		Federal Services		Aviation		Total
Balance as of December 31, 2016	$	63,190	$	30,883	$	104,549	$	198,622
Increase from acquisitions	—		—		—		—
Balance as of December 31, 2017	$	63,190	$	30,883	$	104,549	$	198,622
Increase from acquisitions	—		—		—		—
Balance as of December 31, 2018	$	63,190	$	30,883	$	104,549	$	198,622

Intangible Assets

Intangible assets were comprised of the following (in thousands):

	Cost		Accumulated Amortization			Accumulated Impairment Loss			Net Intangible Assets
December 31, 2018
Contract and customer-related	$	173,094	$	(86,076	)	$	(1,025	)	$	85,993
Acquired technologies	12,400		(8,533		)	—			3,867
Trade names	16,670		(11,638		)	—			5,032
Total	$	202,164	$	(106,247	)	$	(1,025	)	$	94,892
December 31, 2017
Contract and customer-related	$	173,094	$	(72,937	)	$	(1,025	)	$	99,132
Acquired technologies	12,400		(7,406		)	—			4,994
Trade names	16,670		(9,887		)	—			6,783
Total	$	202,164	$	(90,230	)	$	(1,025	)	$	110,909

Future Amortization of Intangible Assets

Future expected amortization of intangible assets is as follows for the years ending December 31, (in thousands):

	Amortization
2019	$	15,953
2020	15,362
2021	14,998
2022	13,252
2023	9,252
Thereafter	26,075
Total	$	94,892