Goodwill and Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Goodwill by Business Segment

The components of the Company’s goodwill by an operating segment at September 30, 2017 and 2016 are as follows (in thousands):

	Brooks
	Semiconductor		Brooks
	Solutions		Life Science
	Group		Systems		Other		Total
Gross goodwill, at September 30, 2015	$	654,727	$	55,625	$	26,014	$	736,366
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at September 30, 2015		65,783		55,625		—		121,408
Acquisitions and adjustments		1,054		79,676		—		80,730
Gross goodwill, at September 30, 2016	$	655,781	$	135,301	$	26,014	$	817,096
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at September 30, 2016		66,837		135,301		—		202,138
Acquisitions and adjustments		(19)		31,519		—		31,500
Gross goodwill, at September 30, 2017		655,762		166,820		26,014		848,596
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at September 30, 2017	$	66,818	$	166,820	$	—	$	233,638

Components of Identifiable Intangible Assets

The components of the Company’s identifiable intangible assets as of September 30, 2017 and 2016 are as follows (in thousands):

	September 30, 2017						September 30, 2016
			Accumulated		Net Book				Accumulated		Net Book
	Cost		Amortization		Value		Cost		Amortization		Value
Patents	$	9,028	$	7,729	$	1,299	$	7,808	$	7,486	$	322
Completed technology		61,662		54,777		6,885		60,485		51,018		9,467
Trademarks and trade names		9,244		4,969		4,275		9,142		4,204		4,938
Customer relationships		130,655		59,594		71,061		114,263		47,147		67,116
	$	210,589	$	127,069	$	83,520	$	191,698	$	109,855	$	81,843

Schedule of Future Amortization Expense

Estimated future amortization expense for the intangible assets as of September 30, 2017 is as follows (in thousands):

Fiscal year ended September 30,
2018	$	18,026
2019		17,076
2020		15,244
2021		9,730
2022		7,418
Thereafter		16,026
	$	83,520