Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Goodwill by Business Segment

The components of the Company’s goodwill by operating segment at March 31, 2019 and September 30, 2018 are as follows (in thousands):

	Brooks
	Semiconductor
	Solutions		Brooks
	Group		Life Sciences		Other		Total
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		(184)		236,834		—		236,650
Gross goodwill, at March 31, 2019		636,723		444,747		26,014		1,107,484
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at March 31, 2019	$	47,779	$	444,747	$	—	$	492,526

Components of Identifiable Intangible Assets

The components of the Company’s identifiable intangible assets as of March 31, 2019 and September 30, 2018 are as follows (in thousands):

	March 31, 2019						September 30, 2018
			Accumulated		Net Book				Accumulated		Net Book
	Cost		Amortization		Value		Cost		Amortization		Value
Patents	$	5,302	$	4,477	$	825	$	5,302	$	4,325	$	977
Completed technology		88,724		33,592		55,132		44,829		28,934		15,895
Trademarks and trade names		25,318		4,225		21,093		6,298		2,953		3,345
Customer relationships		267,372		73,629		193,743		142,489		62,750		79,739
	$	386,716	$	115,923	$	270,793	$	198,918	$	98,962	$	99,956

Schedule of Future Amortization Expense

Estimated future amortization expense for the intangible assets for the remainder of fiscal year 2019, the subsequent four fiscal years and thereafter is as follows (in thousands):

Fiscal year ended September 30,
2019	$	17,993
2020		41,339
2021		37,546
2022		34,545
2023		31,589
Thereafter		107,781
	$	270,793