Capital Assets (Tables)

6 Months Ended

Mar. 30, 2019

Capital Assets [Abstract]

Property and Equipment

Property and equipment, net are as follows: 

	March 30, 2019			September 29, 2018
Land and improvements	$	2,881		$	2,881
Buildings and improvements	58,692			58,880
Machinery and equipment	210,065			203,647
Assets held under capital leases	2,796			2,815
Total property and equipment	274,434			268,223
Less: Accumulated depreciation	(186,308		)	(177,954		)
Total property and equipment, net	$	88,126		$	90,269

Goodwill

Changes to the carrying amount of goodwill are as follows:  

	Test & Simulation			Sensors			Total
Balance, September 29, 2018	$	24,631		$	344,644		$	369,275
Acquisitions 1	34,387			—			34,387
Currency translation	(208		)	(29		)	(237		)
Balance, March 30, 2019	$	58,810		$	344,615		$	403,425

¹    See Note 18 for additional information regarding acquisitions.

Intangible Assets

Intangible assets are as follows: 

	March 30, 2019
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Weighted Average Useful Life (in Years)
Software development costs 2	$	35,297	$	(15,859	)	$	19,438	6.3
Technology and patents	59,055		(14,110		)	44,945		14.9
Trademarks and trade names	12,697		(3,442		)	9,255		20.7
Customer lists	179,919		(28,831		)	151,088		15.7
Land-use rights	2,360		(858		)	1,502		26.2
Other	3,705		(332		)	3,373		4.0
Trade names	57,500		—			57,500		Indefinite
Total intangible assets	$	350,533	$	(63,432	)	$	287,101	14.5

	September 29, 2018
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Weighted Average Useful Life (in Years)
Software development costs 2	$	31,251	$	(15,860	)	$	15,391	6.5
Technology and patents	46,405		(12,188		)	34,217		14.9
Trademarks and trade names	6,754		(2,987		)	3,767		25.4
Customer lists	156,971		(23,314		)	133,657		15.8
Land-use rights	2,336		(730		)	1,606		26.0
Trade names	57,500		—			57,500		Indefinite
Total intangible assets	$	301,217	$	(55,079	)	$	246,138	14.8

²  The gross carrying amount of software development costs as of March 30, 2019 and September 29, 2018 includes $19,438 and $15,391, respectively, of intangible assets not yet placed in service.

Amortization Expense

Amortization expense recognized related to finite-lived intangible assets is as follows:

	Three Months Ended				Six Months Ended
	March 30, 2019		March 31, 2018		March 30, 2019		March 31, 2018
Amortization expense	$	4,403	$	3,456	$	8,219	$	6,935

Estimated Future Amortization Expense on Finite-Lived Intangible Assets

Estimated future amortization expense related to finite-lived intangible assets is as follows: 

	Amortization Expense
Remainder of 2019	$	8,695
2020	17,108
2021	18,164
2022	19,036
2023	18,139
2024	17,770
Thereafter	130,689