Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2018

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, 2018 and September 30, 2017 are as follows (in thousands):

	Brooks
	Semiconductor
	Solutions		Brooks
	Group		Life Sciences		Other		Total
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
Acquisitions and adjustments		72		41,518		—		41,590
Gross goodwill, at March 31, 2018		655,834		208,338		26,014		890,186
Accumulated goodwill impairments		(588,944)		—		(26,014)		(614,958)
Goodwill, net of accumulated impairments, at March 31, 2018	$	66,890	$	208,338	$	—	$	275,228

Components of Identifiable Intangible Assets

The components of the Company’s identifiable intangible assets as of March 31, 2018 and September 30, 2017 are as follows (in thousands):

	March 31, 2018						September 30, 2017
			Accumulated		Net Book				Accumulated		Net Book
	Cost		Amortization		Value		Cost		Amortization		Value
Patents	$	9,028	$	7,883	$	1,145	$	9,028	$	7,729	$	1,299
Completed technology		67,510		56,686		10,824		61,662		54,777		6,885
Trademarks and trade names		9,417		5,522		3,895		9,244		4,969		4,275
Customer relationships		154,844		68,526		86,318		130,655		59,594		71,061
	$	240,799	$	138,617	$	102,182	$	210,589	$	127,069	$	83,520

Schedule of Future Amortization Expense

Estimated future amortization expense for the intangible assets for the remainder of fiscal year 2018 and the subsequent four fiscal years is as follows (in thousands):

Fiscal year ended September 30,
2018	$	11,045
2019		20,853
2020		19,009
2021		13,248
2022		10,553
Thereafter		27,474
	$	102,182