Equity Method and Other Investments	12 Months Ended
Sep. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Equity Method and Other Investments	8. Equity Method and Other Investments The Company accounts for certain of its investments using the equity method of accounting and records its proportionate share of the investee’s earnings (losses) in its results of operations with a corresponding increase (decrease) in the carrying value of the investment. BioCision, LLC As of September 30, 2016, the Company held a 20% equity interest in BioCision, LLC, or BioCision, a privately-held company based in Larkspur, California, which was accounted for as an equity method investment. The carrying value of the investment in BioCision was $1.7 million at September 30, 2016. During fiscal years ended September 30, 2016, the Company recorded a loss associated with BioCision of $1.1 million. The Company held a term loan receivable from BioCision as of September 30, 2016. The term loan was provided to BioCision to support its working capital requirements. The term loan had an aggregate principal amount of $1.5 million and bore an annual interest rate of 10%. At September 30, 2016, the term loan was recorded at its carrying value of $1.5 million and included in "Other assets" in the Company’s Consolidated Balance Sheets. The Company also held five-year convertible debt securities with a warrant agreement to purchase BioCision’s preferred units as of September 30, 2016. The convertible debt securities and the warrant were purchased by the Company in fiscal year 2015 for a total purchase price of $5.0 million. The convertible debt securities were accruing interest at the annual rate of 9%, and all principal and accrued interest were due at maturity. The convertible debt securities and the warrant were recorded at fair value during each reporting period, and the remeasurement gains and losses were recognized as a component of "Other (expense) income, net" in the Company’s Consolidated Statements of Operations. During the fiscal year ended September 30, 2016, the Company recognized remeasurement gains of $0.4 million related to these financial instruments. On November 28, 2016, BioCision established Cool Lab as its subsidiary upon transferring certain assets related to cell cryopreservation solutions. The Company acquired a 100% equity interest of the subsidiary on that date for an aggregate purchase price of $15.2 million, consisting of a cash payment of $4.8 million, a liability to the seller of $0.1 million, and non-cash consideration of $10.3 million measured at fair value on the acquisition date. The carrying value of the equity method investment in BioCision was $1.2 million on November 28, 2016. The Company recorded a loss associated with BioCision of $0.5 million from October 1, 2016 through the acquisition date. The equity method investment in BioCision was measured at fair value of $3.1 million at the acquisition date, and as a result the Company recognized a gain of $1.8 million upon the redemption of the equity method investment in its Consolidated Statements of Operations during fiscal year ended September 30, 2017. On November 28, 2016, convertible debt, warrant and the term loan with carrying values of $5.8 million, less than $0.1 million and $1.6 million, respectively, were measured at their fair values of $5.6 million, less than $0.1 million and $1.6 million, respectively. As a result of such measurement, the Company recognized an aggregate loss of $0.2 million upon the settlement of these financial instruments in "Other (expense) income, net" in its Consolidated Statements of Operations during the year ended September 30, 2017. Please refer to Note 4, "Acquisitions" for further information on the acquisition transaction.

8. Equity Method and Other Investments

The Company accounts for certain of its investments using the equity method of accounting and records its proportionate share of the investee’s earnings (losses) in its results of operations with a corresponding increase (decrease) in the carrying value of the investment.

BioCision, LLC

As of September 30, 2016, the Company held a 20% equity interest in BioCision, LLC, or BioCision, a privately-held company based in Larkspur, California, which was accounted for as an equity method investment. The carrying value of the investment in BioCision was $1.7 million at September 30, 2016. During fiscal years ended September 30, 2016, the Company recorded a loss associated with BioCision of $1.1 million.

The Company held a term loan receivable from BioCision as of September 30, 2016. The term loan was provided to BioCision to support its working capital requirements. The term loan had an aggregate principal amount of $1.5 million and bore an annual interest rate of 10%. At September 30, 2016, the term loan was recorded at its carrying value of $1.5 million and included in "Other assets" in the Company’s Consolidated Balance Sheets.

The Company also held five-year convertible debt securities with a warrant agreement to purchase BioCision’s preferred units as of September 30, 2016. The convertible debt securities and the warrant were purchased by the Company in fiscal year 2015 for a total purchase price of $5.0 million. The convertible debt securities were accruing interest at the annual rate of 9%, and all principal and accrued interest were due at maturity. The convertible debt securities and the warrant were recorded at fair value during each reporting period, and the remeasurement gains and losses were recognized as a component of "Other (expense) income, net" in the Company’s Consolidated Statements of Operations. During the fiscal year ended September 30, 2016, the Company recognized remeasurement gains of $0.4 million related to these financial instruments.

On November 28, 2016, BioCision established Cool Lab as its subsidiary upon transferring certain assets related to cell cryopreservation solutions. The Company acquired a 100% equity interest of the subsidiary on that date for an aggregate purchase price of $15.2 million, consisting of a cash payment of $4.8 million, a liability to the seller of $0.1 million, and non-cash consideration of $10.3 million measured at fair value on the acquisition date.

The carrying value of the equity method investment in BioCision was $1.2 million on November 28, 2016. The Company recorded a loss associated with BioCision of $0.5 million from October 1, 2016 through the acquisition date. The equity method investment in BioCision was measured at fair value of $3.1 million at the acquisition date, and as a result the Company recognized a gain of $1.8 million upon the redemption of the equity method investment in its Consolidated Statements of Operations during fiscal year ended September 30, 2017. On November 28, 2016, convertible debt, warrant and the term loan with carrying values of $5.8 million, less than $0.1 million and $1.6 million, respectively, were measured at their fair values of $5.6 million, less than $0.1 million and $1.6 million, respectively. As a result of such measurement, the Company recognized an aggregate loss of $0.2 million upon the settlement of these financial instruments in "Other (expense) income, net" in its Consolidated Statements of Operations during the year ended September 30, 2017. Please refer to Note 4, "Acquisitions" for further information on the acquisition transaction.