Segment Reporting (Tables)

9 Months Ended

Sep. 27, 2020

Segment Reporting [Abstract]

Information by Reportable Segment

The following table shows information by reportable segment for the periods presented (in thousands):

	Three Months Ended				Nine Months Ended
	September 27,		September 29,		September 27,		September 29,
	2020		2019		2020		2019
Revenues
GMS	$	521,346	$	535,635	$	1,486,643	$	1,566,138
NSS	144,894		162,082		440,152		500,670
Corporate	—		—		—		—
Total revenues	$	666,240	$	697,717	$	1,926,795	$	2,066,808
Operating income
GMS	$	31,401	$	26,000	$	75,541	$	77,449
NSS	5,679		(26,402)		17,770		(23,270)
Corporate	(8,548)		(10,123)		(23,027)		(24,193)
Total operating income	$	28,532	$	(10,525)	$	70,284	$	29,986
Amortization of intangible assets
GMS	$	4,115	$	4,140	$	12,346	$	12,539
NSS	3,932		4,036		11,795		12,490
Corporate	—		—		—		—
Total amortization of intangible assets	$	8,047	$	8,176	$	24,141	$	25,029