Goodwill and Intangible Assets Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($) segment	Mar. 31, 2015 USD ($)	Feb. 01, 2016 USD ($)	Nov. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Aug. 14, 2015 USD ($)	Sep. 30, 2014 USD ($)
Goodwill [Line Items]
Carrying amount of goodwill	$ 202,347		$ 202,347		$ 24,000		$ 121,408		$ 109,501
Percentage of fair value in excess of carrying amount (percent)					18.00%
Number of reportable segments | segment			3
Amortization expense for intangible assets	3,800	$ 3,200	$ 7,300	$ 6,400
BioStorage Technologies, Inc.
Goodwill [Line Items]
Carrying amount of goodwill						$ 79,889
Goodwill acquired during period			79,900
Amortization expense for intangible assets	800
Contact Co., Ltd
Goodwill [Line Items]
Carrying amount of goodwill								$ 4,195
Measurement period adjustment	(1,100)
Amortization expense for intangible assets	$ 200		$ 400