CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Revenues
Product	$ 117,621	$ 174,936	$ 214,719	$ 336,125
Services	21,716	17,715	44,846	34,893
Total revenues	139,337	192,651	259,565	371,018
Cost of revenues
Product	75,443	118,661	139,732	227,634
Services	15,612	12,316	31,194	24,391
Total cost of revenues	91,055	130,977	170,926	252,025
Gross profit	48,282	61,674	88,639	118,993
Operating expenses
Research and development	12,529	9,442	24,478	18,340
Selling, general and administrative	24,270	25,245	51,012	49,723
Restructuring charges	42	246	245	460
In-process research and development	3,026		3,026
Total operating expenses	39,867	34,933	78,761	68,523
Operating income	8,415	26,741	9,878	50,470
Interest income	273	261	552	536
Interest expense		(28)	(7)	(29)
Other income (expense), net	(51)	256	295	417
Income before income taxes and equity in earnings of joint ventures	8,637	27,230	10,718	51,394
Income tax provision (benefit)	(659)	1,035	(359)	2,023
Income before equity in earnings of joint ventures	9,296	26,195	11,077	49,371
Equity in earnings of joint ventures	195	408	1,420	718
Net income	9,491	26,603	12,497	50,089
Net income attributable to noncontrolling interests	(5)	(18)	(13)	(18)
Net income attributable to Brooks Automation, Inc.	$ 9,486	$ 26,585	$ 12,484	$ 50,071
Basic net income per share attributable to Brooks Automation, Inc. common stockholders	$ 0.15	$ 0.41	$ 0.19	$ 0.78
Diluted net income per share attributable to Brooks Automation, Inc. common stockholders	$ 0.14	$ 0.41	$ 0.19	$ 0.77
Shares used in computing earnings per share
Basic	65,038	64,516	64,925	64,388
Diluted	65,828	65,061	65,552	64,801