Capital Assets

12 Months Ended

Sep. 30, 2017

Capital Assets [Abstract]

Capital Assets

CAPITAL ASSETS

Property and Equipment

Property and equipment, net are as follows:

(in thousands)	2017			2016
Land and improvements	$	2,867		$	2,865
Buildings and improvements	60,340			59,350
Machinery and equipment	196,621			189,406
Assets held under capital leases	2,747			—
Total property and equipment	262,575			251,621
Less: Accumulated depreciation	(162,645		)	(150,832		)
Total property and equipment, net	$	99,930		$	100,789

Goodwill

Changes to the carrying amount of goodwill are as follows:

(in thousands)	Test			Sensors			Total
Balance, October 3, 2015	$	26,243		$	1,434		$	27,677
Acquisitions1	—			343,242			343,242
Adjustment related to finalization of purchase accounting1	(530		)	—			(530		)
Currency translation gain (loss)	(691		)	2			(689		)
Balance, October 1, 2016	$	25,022		$	344,678		$	369,700
Adjustment related to finalization of purchase accounting1	—			(64		)	(64		)
Currency translation gain (loss)	87			39			126
Balance, September 30, 2017	$	25,109		$	344,653		$	369,762

¹ See Note 13 for additional information regarding acquisitions.

See Note 1 for additional information on our goodwill impairment analysis.

Intangible Assets

Intangible assets are as follows:

	September 30, 2017
(in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Weighted Average Useful Life (in Years)
Software development costs	$	26,083	$	(15,830	)	$	10,253	5.9
Technology and patents	46,731		(9,399		)	37,332		14.9
Trademarks and trade names	6,936		(2,484		)	4,452		25.6
Customer lists	157,016		(13,359		)	143,657		15.8
Land-use rights	2,377		(492		)	1,885		26.4
Trade names	57,500		—			57,500		Indefinite
Total intangible assets	$	296,643	$	(41,564	)	$	255,079	15.0
	October 1, 2016
(in thousands)	Gross Carrying Amount		Accumulated Amortization			Net Carrying Value		Weighted Average Useful Life (in Years)
Software development costs	$	23,184	$	(14,938	)	$	8,246	6.0
Technology and patents	46,672		(6,360		)	40,312		14.9
Trademarks and trade names	6,903		(1,911		)	4,992		25.5
Customer lists	156,987		(3,372		)	153,615		15.8
Land-use rights	2,369		(245		)	2,124		26.3
Trade names	57,500		—			57,500		Indefinite
Total intangible assets	$	293,615	$	(26,826	)	$	266,789	15.1

Amortization expense recognized during fiscal years 2017, 2016 and 2015 was $14,665, $5,517 and $4,058, respectively.

See Note 1 for additional information on our intangible asset impairment analysis.

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

Fiscal Year	Amortization Expense (in thousands)
2018	$	15,422
2019	15,638
2020	15,357
2021	15,357
2022	15,174
Thereafter	120,631

Future amortization amounts presented above are estimates. Actual future amortization expense may be different due to fluctuations in foreign currency exchange rates, future acquisitions, impairments, changes in amortization periods or other factors.