Revenue (Tables)

6 Months Ended

Jun. 27, 2020

Revenue from Contract with Customer [Abstract]

Summary of Contract Assets and Liabilities

The following table presents the beginning and ending balances of contract assets and contract liabilities during the six months ended June 27, 2020:

(In thousands)	Contract Assets		Contract Liabilities
Beginning Balance, January 1, 2020	$	19,567	$	38,758
Ending Balance, June 27, 2020	$	18,525	$	31,640

Disaggregation of Revenue

The following table presents our revenue disaggregated by Market Segments as follows:

	Six Months Ended				Three Months Ended
(In thousands)	June 27, 2020		June 29, 2019		June 27, 2020		June 29, 2019
Aerospace Segment
Commercial Transport	$	170,323	$	271,509	$	67,548	$	129,731
Military	32,165		40,498		14,052		19,545
Business Jet	30,548		37,123		15,542		17,286
Other	10,607		13,658		5,431		7,725
Aerospace Total	243,643		362,788		102,573		174,287
Test Systems Segment
Semiconductor	2,822		5,596		1,188		2,242
Aerospace & Defense	34,813		28,888		19,933		12,569
Test Systems Total	37,635		34,484		21,121		14,811
Total	$	281,278	$	397,272	$	123,694	$	189,098

The following table presents our revenue disaggregated by Product Lines as follows:

	Six Months Ended				Three Months Ended
(In thousands)	June 27, 2020		June 29, 2019		June 27, 2020		June 29, 2019
Aerospace Segment
Electrical Power & Motion	$	116,019	$	176,579	$	46,563	$	84,042
Lighting & Safety	65,653		95,375		27,731		46,770
Avionics	41,277		59,543		19,134		25,682
Systems Certification	4,991		5,666		1,660		4,048
Structures	5,096		11,967		2,054		6,020
Other	10,607		13,658		5,431		7,725
Aerospace Total	243,643		362,788		102,573		174,287
Test Systems	37,635		34,484		21,121		14,811
Total	$	281,278	$	397,272	$	123,694	$	189,098