CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Revenue
Total revenue	$ 780,848	$ 631,560	$ 527,499
Cost of revenue
Total cost of revenue	464,588	385,479	328,612
Gross profit	316,260	246,081	198,887
Operating expenses
Research and development	56,368	46,936	39,875
Selling, general and administrative	211,960	167,022	141,549
Restructuring charges	1,894	714	3,144
Total operating expenses	270,222	214,672	184,568
Operating income	46,038	31,409	14,319
Interest income	1,449	1,881	464
Interest expense	(22,250)	(9,520)	(408)
Gain on settlement of equity method investment			1,847
Loss on extinguishment of debt	(14,339)
Other expenses, net	(1,455)	(3,304)	(1,702)
Income (loss) before income taxes	9,443	20,466	14,520
Income tax (benefit) provision	(111)	(47,251)	3,380
Income before equity in earnings of equity method investments	9,554	67,717	11,140
Equity in earnings of equity method investments			(453)
Income from continuing operations	9,554	67,717	10,687
Income from discontinued operations, net of tax	427,862	48,747	51,925
Net income	437,416	116,464	62,612
Net loss attributable to noncontrolling interest		111
Net income attributable to Brooks Automation, Inc.	$ 437,416	$ 116,575	$ 62,612
Basic net income per share attributable to Brooks Automation, Inc. common stockholders:
Income from continuing operations	$ 0.13	$ 0.96	$ 0.15
Income from discontinued operations, net of tax	5.95	0.69	0.75
Basic net income per share	6.08	1.65	0.90
Diluted net income per share attributable to Brooks Automation, Inc. common stockholders:
Income from continuing operations	0.13	0.95	0.15
Income from discontinued operations, net of tax	5.91	0.69	0.74
Diluted net income per share	$ 6.04	$ 1.64	$ 0.89
Weighted average shares used in computing net income per share:
Basic	71,992	70,489	69,575
Diluted	72,386	70,937	70,485
Products
Revenue
Total revenue	$ 504,029	$ 482,389	$ 406,986
Cost of revenue
Total cost of revenue	302,237	288,323	249,396
Services
Revenue
Total revenue	276,819	149,171	120,513
Cost of revenue
Total cost of revenue	$ 162,351	$ 97,156	$ 79,216