Revenue (Tables)

9 Months Ended

Sep. 28, 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 nine months ended September 28, 2019:

(In thousands)	Contract Assets		Contract Liabilities
Beginning Balance, January 1, 2019	$	33,030	$	27,347
Ending Balance, September 28, 2019	$	25,952	$	23,959

Disaggregation of Revenue

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

	Nine Months Ended				Three Months Ended
(In thousands)	September 28, 2019		September 29, 2018		September 28, 2019		September 29, 2018
Aerospace Segment
Commercial Transport	$	393,721	$	402,539	$	122,212	$	136,692
Military	57,753		46,410		17,255		16,125
Business Jet	49,555		30,291		12,432		9,289
Other	19,461		21,143		5,803		7,473
Aerospace Total	520,490		500,383		157,702		169,579
Test Systems Segment
Semiconductor	7,815		72,061		2,219		33,596
Aerospace & Defense	45,985		27,895		17,097		9,499
Test Systems Total	53,800		99,956		19,316		43,095
Total	$	574,290	$	600,339	$	177,018	$	212,674

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

	Nine Months Ended				Three Months Ended
(In thousands)	September 28, 2019		September 29, 2018		September 28, 2019		September 29, 2018
Aerospace Segment
Electrical Power & Motion	$	255,007	$	218,931	$	78,428	$	78,610
Lighting & Safety	139,502		129,244		44,127		43,481
Avionics	79,414		100,354		19,871		31,059
Systems Certification	9,050		12,028		3,384		2,373
Structures	18,056		18,683		6,089		6,583
Other	19,461		21,143		5,803		7,473
Aerospace Total	520,490		500,383		157,702		169,579
Test Systems	53,800		99,956		19,316		43,095
Total	$	574,290	$	600,339	$	177,018	$	212,674