Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Goodwill by Business Segment

The following table sets forth the changes in the carrying amount of goodwill by reportable segment since September 30, 2017 (in thousands):

	Brooks
	Semiconductor
	Solutions		Brooks
	Group		Life Sciences		Other		Total
Gross goodwill, at September 30, 2017	$	629,278	$	166,820	$	26,014	$	822,112
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at September 30, 2017		40,334		166,820		—		207,154
Acquisitions and adjustments		7,629		41,093		—		48,722
Gross goodwill, at September 30, 2018		636,907		207,913		26,014		870,834
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at September 30, 2018		47,963		207,913		—		255,876
Acquisitions and adjustments		(116)		232,842		—		232,726
Gross goodwill, at September 30, 2019		636,791		440,755		26,014		1,103,560
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at September 30, 2019	$	47,847	$	440,755	$	—	$	488,602

Components of Identifiable Intangible Assets

The components of the Company’s identifiable intangible assets as of September 30, 2019 and 2018 are as follows (in thousands):

	September 30, 2019						September 30, 2018
			Accumulated		Net Book				Accumulated		Net Book
	Cost		Amortization		Value		Cost		Amortization		Value
Patents	$	5,302	$	4,628	$	674	$	5,302	$	4,325	$	977
Completed technology		88,288		38,778		49,510		44,829		28,934		15,895
Trademarks and trade names		25,340		5,807		19,533		6,298		2,953		3,345
Customer relationships		265,451		84,048		181,403		142,489		62,750		79,739
Other intangibles		231		183		48		—		—		—
	$	384,612	$	133,444	$	251,168	$	198,918	$	98,962	$	99,956

Schedule of Future Amortization Expense

Estimated future amortization expense for the intangible assets as of September 30, 2019 is as follows (in thousands):

Fiscal year ended September 30,
2020	$	41,381
2021		37,494
2022		34,390
2023		31,267
2024		26,456
Thereafter		80,180
	$	251,168