Revenue (Tables)

6 Months Ended

Jun. 29, 2019

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 29, 2019:

(In thousands)	Contract Assets		Contract Liabilities
Beginning Balance, January 1, 2019	$	33,030	$	27,347
Ending Balance, June 29, 2019	$	36,223	$	26,050

Disaggregation of Revenue

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

	Six Months Ended				Three Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Aerospace Segment
Commercial Transport	$	271,509	$	265,847	$	129,731	$	132,797
Military	40,498		30,285		19,545		16,270
Business Jet	37,123		21,002		17,286		10,338
Other	13,658		13,670		7,725		6,799
Aerospace Total	362,788		330,804		174,287		166,204
Test Systems Segment
Semiconductor	5,596		38,465		2,242		31,405
Aerospace & Defense	28,888		18,396		12,569		10,997
Test Systems Total	34,484		56,861		14,811		42,402
Total	$	397,272	$	387,665	$	189,098	$	208,606

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

	Six Months Ended				Three Months Ended
(In thousands)	June 29, 2019		June 30, 2018		June 29, 2019		June 30, 2018
Aerospace Segment
Electrical Power & Motion	$	176,579	$	140,321	$	84,042	$	67,643
Lighting & Safety	95,375		85,763		46,770		44,121
Avionics	59,543		69,295		25,682		36,272
Systems Certification	5,666		9,655		4,048		4,872
Structures	11,967		12,100		6,020		6,497
Other	13,658		13,670		7,725		6,799
Aerospace Total	362,788		330,804		174,287		166,204
Test Systems	34,484		56,861		14,811		42,402
Total	$	397,272	$	387,665	$	189,098	$	208,606