Subsequent Events	12 Months Ended
Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	21. Subsequent Events Senior Secured Term Loan Facility On October 4, 2017, the Company entered into the $200.0 million term loan with the lenders. The term loan was issued at $197.6 million, or 98.8% of its par value, resulting in a discount of $2.4 million, or 1.2%, which represented loan origination fees paid at the closing. The loan proceeds will be used for general corporate purposes, including acquisitions. The loan principal amount may be increased by an aggregate amount equal to $75.0 million plus any voluntary repayments of the term loans plus an amount such that the secured leverage ratio of the Company is less than 3.00 to 1.00. Deferred financing costs directly associated with obtaining the term loan were $0.4 million at September 30, 2017 and are presented within "Other assets" in the accompanying Consolidated Balance Sheets. Under the terms of the loan agreement, the Company may elect for the loan to bear an interest rate as Eurodollar Borrowings or as Alternate Base Rate, or ABR Borrowings. Interest applicable to Eurodollar Borrowings is based on the Adjusted LIBO Rate plus applicable margin of 2.50%. The Adjusted LIBO Rate is the rate appearing on Bloomberg screen LIBOR01 which gets reset at the beginning of each selected interest period based on LIBOR rate then in effect. Interest applicable to Alternate Base Rate Borrowings is based on the Alternate Base Rate plus applicable margin of 1.50%. Alternate Base Rate is determined based on the highest of: (a) the federal funds effective rate plus 0.50%, (b) prime rate plus 1.00%, or (c) one-month LIBOR rate plus 1.00%. The Company’s obligations under the term loan are guaranteed by the Company’s wholly-owned subsidiary, BioStorage Technologies, Inc. (the “guarantor”), subject to the terms and conditions of the term loan agreement. The Company and the guarantor granted the lenders a perfected first priority security interest in substantially all of the assets of the Company and the guarantor to secure the repayment of the term loan. The term loan matures and becomes fully payable on October 4, 2024. The principal is payable in installments equal to 0.25% of the initial principal amount of the term loans on March 31st, June 30th, September 30th and December 31st of each year, with any remaining amount of principal becoming due and payable on the maturity date. All accrued and unpaid interest on ABR Borrowings shall be due and payable at the same time as the loan principal installments. All accrued and unpaid interest on Eurodollar Borrowings shall be due on the last day of each interest period elected by the Company for such Eurodollar Borrowings, except for interest periods of more than three months in which case all accrued and unpaid interest shall be due and payable every three months. Subject to certain conditions stated in the term loan agreement, the Company may redeem the term loan at any time at its option without a significant premium or penalty, except for a repricing transaction, as defined in the term loan agreement, which is subject to a premium of 1.00% of the loan principal amount during the first six months of the loan term. The Company would be required to redeem the term loan at the principal amount then outstanding upon occurrence of certain events, including (i) net proceeds received from the sale or other disposition of the Company’s or guarantor’ assets, subject to certain limitations, (ii) casualty and condemnation proceeds received by the Company or the guarantor, subject to certain exceptions, (iii) net proceeds received by the Company or the guarantor from the issuance of debt or disqualified capital stock after October 4, 2017. Commencing on December 31, 2018, the Company will be required to make principal payments equal to the excess cash flow amount, as defined in the term loan agreement. Such prepayments are equal to 50% of the preceding year excess cash flow amount reduced by voluntary prepayments of the term loan, subject to certain limitations. The term loan agreement contains certain customary representations and warranties, covenants and events of default. If any of the events of default occur and are not waived or cured within applicable grace periods, any unpaid amounts under the term loan agreement will bear an annual interest rate at 2.00% above the rate otherwise applicable under the terms and conditions of such agreement. The term loan agreement does not contain financial maintenance covenants. Acquisition On October 5, 2017, the Company acquired all of the outstanding capital stock of 4titude Limited (“4titude”), a U.K.-based manufacturer of scientific consumables for biological sample materials used in a variety of genomic and DNA analytical applications. Total cash payment made by the Company was $65.5 million, net of cash acquired, and is subject to working capital adjustments. The acquisition is expected to expand the Company’s existing offerings of consumables and instruments within the Brooks Life Science Systems segment. The Company expects to report the results of operations for this acquisition within the results of Brooks Life Science Systems segment starting from the acquisition date. The Company has not presented a purchase price allocation related to fair values of assets acquired and liabilities assumed, as well as pro-forma information summary for its consolidated results of operations for the fiscal year ended September 30, 2017 and 2016 as if the acquisition occurred on October 1, 2015 because the initial accounting for the acquisition was incomplete on the financial statements issuance date. Dividend On November 8, 2017, the Company’s Board of Directors declared a cash dividend of $0.10 per share payable on December 22, 2017 to common stockholders of record as of December 1, 2017. Dividends are declared at the discretion of the Company’s Board of Directors and depend on the Company’s actual cash flow from operations, its financial condition and capital requirements, as well as any other factors the Company’s Board of Directors may consider relevant. Future dividend declarations, as well as the record and payment dates for such dividends, will be determined by the Company’s Board of Directors on a quarterly basis.

21. Subsequent Events

Senior Secured Term Loan Facility

On October 4, 2017, the Company entered into the $200.0 million term loan with the lenders. The term loan was issued at $197.6 million, or 98.8% of its par value, resulting in a discount of $2.4 million, or 1.2%, which represented loan origination fees paid at the closing. The loan proceeds will be used for general corporate purposes, including acquisitions. The loan principal amount may be increased by an aggregate amount equal to $75.0 million plus any voluntary repayments of the term loans plus an amount such that the secured leverage ratio of the Company is less than 3.00 to 1.00. Deferred financing costs directly associated with obtaining the term loan were $0.4 million at September 30, 2017 and are presented within "Other assets" in the accompanying Consolidated Balance Sheets.

Under the terms of the loan agreement, the Company may elect for the loan to bear an interest rate as Eurodollar Borrowings or as Alternate Base Rate, or ABR Borrowings. Interest applicable to Eurodollar Borrowings is based on the Adjusted LIBO Rate plus applicable margin of 2.50%. The Adjusted LIBO Rate is the rate appearing on Bloomberg screen LIBOR01 which gets reset at the beginning of each selected interest period based on LIBOR rate then in effect. Interest applicable to Alternate Base Rate Borrowings is based on the Alternate Base Rate plus applicable margin of 1.50%. Alternate Base Rate is determined based on the highest of: (a) the federal funds effective rate plus 0.50%, (b) prime rate plus 1.00%, or (c) one-month LIBOR rate plus 1.00%.

The Company’s obligations under the term loan are guaranteed by the Company’s wholly-owned subsidiary, BioStorage Technologies, Inc. (the “guarantor”), subject to the terms and conditions of the term loan agreement. The Company and the guarantor granted the lenders a perfected first priority security interest in substantially all of the assets of the Company and the guarantor to secure the repayment of the term loan.

The term loan matures and becomes fully payable on October 4, 2024. The principal is payable in installments equal to 0.25% of the initial principal amount of the term loans on March 31st, June 30th, September 30th and December 31st of each year, with any remaining amount of principal becoming due and payable on the maturity date. All accrued and unpaid interest on ABR Borrowings shall be due and payable at the same time as the loan principal installments. All accrued and unpaid interest on Eurodollar Borrowings shall be due on the last day of each interest period elected by the Company for such Eurodollar Borrowings, except for interest periods of more than three months in which case all accrued and unpaid interest shall be due and payable every three months.

Subject to certain conditions stated in the term loan agreement, the Company may redeem the term loan at any time at its option without a significant premium or penalty, except for a repricing transaction, as defined in the term loan agreement, which is subject to a premium of 1.00% of the loan principal amount during the first six months of the loan term. The Company would be required to redeem the term loan at the principal amount then outstanding upon occurrence of certain events, including (i) net proceeds received from the sale or other disposition of the Company’s or guarantor’ assets, subject to certain limitations, (ii) casualty and condemnation proceeds received by the Company or the guarantor, subject to certain exceptions, (iii) net proceeds received by the Company or the guarantor from the issuance of debt or disqualified capital stock after October 4, 2017. Commencing on December 31, 2018, the Company will be required to make principal payments equal to the excess cash flow amount, as defined in the term loan agreement. Such prepayments are equal to 50% of the preceding year excess cash flow amount reduced by voluntary prepayments of the term loan, subject to certain limitations.

The term loan agreement contains certain customary representations and warranties, covenants and events of default. If any of the events of default occur and are not waived or cured within applicable grace periods, any unpaid amounts under the term loan agreement will bear an annual interest rate at 2.00% above the rate otherwise applicable under the terms and conditions of such agreement. The term loan agreement does not contain financial maintenance covenants.

Acquisition

On October 5, 2017, the Company acquired all of the outstanding capital stock of 4titude Limited (“4titude”), a U.K.-based manufacturer of scientific consumables for biological sample materials used in a variety of genomic and DNA analytical applications. Total cash payment made by the Company was $65.5 million, net of cash acquired, and is subject to working capital adjustments. The acquisition is expected to expand the Company’s existing offerings of consumables and instruments within the Brooks Life Science Systems segment. The Company expects to report the results of operations for this acquisition within the results of Brooks Life Science Systems segment starting from the acquisition date. The Company has not presented a purchase price allocation related to fair values of assets acquired and liabilities assumed, as well as pro-forma information summary for its consolidated results of operations for the fiscal year ended September 30, 2017 and 2016 as if the acquisition occurred on October 1, 2015 because the initial accounting for the acquisition was incomplete on the financial statements issuance date.

Dividend

On November 8, 2017, the Company’s Board of Directors declared a cash dividend of $0.10 per share payable on December 22, 2017 to common stockholders of record as of December 1, 2017. Dividends are declared at the discretion of the Company’s Board of Directors and depend on the Company’s actual cash flow from operations, its financial condition and capital requirements, as well as any other factors the Company’s Board of Directors may consider relevant. Future dividend declarations, as well as the record and payment dates for such dividends, will be determined by the Company’s Board of Directors on a quarterly basis.