CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Sep. 30, 2017
Current assets
Cash and cash equivalents	$ 179,376	$ 101,622
Marketable securities	42,096	28
Accounts receivable, net	156,678	120,828
Inventories	132,298	106,395
Prepaid expenses and other current assets	31,432	23,138
Total current assets	541,880	352,011
Property, plant and equipment, net	61,537	58,462
Long-term marketable securities	10,511	2,642
Long-term deferred tax assets	46,312	1,692
Goodwill	282,205	233,638
Intangible assets, net	106,195	83,520
Equity method investment	37,074	28,593
Other assets	5,716	6,070
Total assets	1,091,430	766,628
Current liabilities
Current portion of long term debt	2,000
Accounts payable	67,589	49,100
Deferred revenue	24,612	24,292
Accrued warranty and retrofit costs	8,759	8,054
Accrued compensation and benefits	25,727	27,065
Accrued restructuring costs	214	1,708
Accrued income taxes payable	7,953	11,417
Accrued expenses and other current liabilities	28,044	25,142
Total current liabilities	164,898	146,778
Long-term debt	194,470
Long-term tax reserves	1,430	1,687
Long-term deferred tax liabilities	6,545	3,748
Long-term pension liabilities	5,268	1,979
Other long-term liabilities	5,723	4,792
Total liabilities	378,334	158,984
Commitments and contingencies (Note 16)
Stockholders' Equity
Preferred stock, $0.01 par value - 1,000,000 shares authorized, no shares issued or outstanding
Common stock, $0.01 par value - 125,000,000 shares authorized, 84,096,224 shares issued and 70,634,355 shares outstanding at June 30, 2018, 83,294,848 shares issued and 69,832,979 shares outstanding at September 30, 2017	841	833
Additional paid-in capital	1,891,304	1,874,918
Accumulated other comprehensive income	18,373	15,213
Treasury stock, at cost- 13,461,869 shares	(200,956)	(200,956)
Accumulated deficit	(997,342)	(1,082,364)
Total Brooks Automation, Inc. stockholders' equity	712,220	607,644
Noncontrolling interest in subsidiary	876
Total stockholders' equity	713,096	607,644
Total liabilities and stockholders' equity	$ 1,091,430	$ 766,628