Equity Method and Other Investments - BioCision, LLC - Cool Lab Subsidiary (Details) - USD ($) $ in Thousands		12 Months Ended
	Nov. 28, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule of Equity Method Investments [Line Items]
Non-cash consideration transferred		$ 10,348
BioCision, LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percent)	20.00%		20.00%
Cool Lab, LLC
Schedule of Equity Method Investments [Line Items]
Percentage of voting interests acquired (as a percent)	100.00%
Total purchase price	$ 15,200
Payments to acquire businesses	4,800
Liabilities incurred	100
Non-cash consideration transferred	10,300
Equity method investments, fair value disclosure	3,100
Convertible debt securities and warrants	5,600
Term notes, fair value disclosure	1,600
Cool Lab, LLC | BioCision, LLC
Schedule of Equity Method Investments [Line Items]
Net carrying value of assets transferred	$ 900