CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Revenue
Total revenue	$ 897,273	$ 780,848	$ 631,560
Cost of revenue
Total cost of revenue	517,249	464,588	385,479
Gross profit	380,024	316,260	246,081
Operating expenses
Research and development	59,063	56,368	46,936
Selling, general and administrative	241,137	211,960	167,022
Restructuring charges	1,366	1,894	714
Total operating expenses	301,566	270,222	214,672
Operating income	78,458	46,038	31,409
Interest income	849	1,449	1,881
Interest expense	(2,944)	(22,250)	(9,520)
Loss on extinguishment of debt		(14,339)
Other expenses, net	(1,391)	(1,455)	(3,304)
Income before income taxes	74,972	9,443	20,466
Income tax provision (benefit)	9,937	(111)	(47,251)
Income from continuing operations	65,035	9,554	67,717
Income (loss) from discontinued operations, net of tax	(182)	427,862	48,747
Net income	64,853	437,416	116,464
Net loss attributable to noncontrolling interest			111
Net income attributable to Brooks Automation, Inc.	$ 64,853	$ 437,416	$ 116,575
Basic net income per share attributable to Brooks Automation, Inc.:
Income from continuing operations (in dollars per share)	$ 0.88	$ 0.13	$ 0.96
Income (loss) from discontinued operations, net of tax (in dollars per share)	0.00	5.95	0.69
Basic net income per share (in dollars per share)	0.88	6.08	1.65
Diluted net income per share attributable to Brooks Automation, Inc.:
Income from continuing operations (in dollars per share)	0.88	0.13	0.95
Income (loss) from discontinued operations, net of tax (in dollars per share)	0.00	5.91	0.69
Diluted net income per share (in dollars per share)	$ 0.88	$ 6.04	$ 1.64
Weighted average shares used in computing net income per share:
Basic (in shares)	73,557	71,992	70,489
Diluted (in shares)	73,850	72,386	70,937
Products
Revenue
Total revenue	$ 573,876	$ 504,029	$ 482,389
Cost of revenue
Total cost of revenue	337,442	302,237	288,323
Services
Revenue
Total revenue	323,397	276,819	149,171
Cost of revenue
Total cost of revenue	$ 179,807	$ 162,351	$ 97,156