Acquisitions - Amounts of Assets and Liabilities at Fair Value as of Acquisition Date (Detail) - USD ($) $ in Thousands					12 Months Ended
	Nov. 30, 2015	Aug. 14, 2015	Oct. 01, 2014	Apr. 30, 2014	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Business Acquisition [Line Items]
Goodwill					$ 202,138	$ 121,408	$ 109,501
Total purchase price, net of cash acquired					125,248	$ 14,450	$ 35,625
BioStorage Technologies, Inc.
Business Acquisition [Line Items]
Accounts receivable	$ 16,942
Prepaid and other current assets	321
Property, plant and equipment	14,345
Intangible assets	41,460
Goodwill	79,639
Other long term assets	53
Debt assumed	(385)
Accounts payable	(1,708)
Accrued liabilities	(9,423)
Deferred revenue	(1,766)
Long-term deferred tax liabilities	(14,169)
Other long-term liabilities	(61)
Total purchase price, net of cash acquired	125,248
Total purchase price, net of cash acquired	$ 128,000
BioStorage Technologies, Inc. | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangibles					36,600
BioStorage Technologies, Inc. | Trademarks
Business Acquisition [Line Items]
Finite-lived intangibles					$ 4,900
Contact Co., Ltd
Business Acquisition [Line Items]
Accounts receivable		$ 42
Inventory		2,020
Prepaid and other current assets		484
Property, plant and equipment		79
Goodwill		4,195
Other long term assets		1,410
Debt assumed		(8,800)
Accounts payable		(1,089)
Accrued liabilities		(1,823)
Long-term deferred tax liabilities		(774)
Total purchase price, net of cash acquired		6,834
Contact Co., Ltd | Completed technology
Business Acquisition [Line Items]
Finite-lived intangibles		$ 2,290
FluidX
Business Acquisition [Line Items]
Accounts receivable			$ 1,980
Inventory			2,857
Prepaid and other current assets			213
Property, plant and equipment			101
Goodwill			8,247
Accounts payable			(2,079)
Accrued liabilities			(992)
Deferred revenue			(72)
Long-term deferred tax liabilities			(1,540)
Total purchase price, net of cash acquired			15,505
FluidX | Completed technology
Business Acquisition [Line Items]
Finite-lived intangibles			1,230
FluidX | Customer relationships
Business Acquisition [Line Items]
Finite-lived intangibles			4,810
FluidX | Trademarks
Business Acquisition [Line Items]
Finite-lived intangibles			$ 750
Dynamic Micro Systems
Business Acquisition [Line Items]
Accounts receivable				$ 15,262
Inventory				10,051
Prepaid and other current assets				2,727
Property, plant and equipment				2,049
Goodwill				11,638
Accounts payable				(10,393)
Accrued liabilities				(5,522)
Deferred revenue				(1,309)
Long-term deferred tax liabilities				(3,588)
Total purchase price, net of cash acquired				31,625
Total purchase price, net of cash acquired				31,625
Dynamic Micro Systems | Completed technology
Business Acquisition [Line Items]
Identifiable intangible assets				3,610
Dynamic Micro Systems | Customer relationships
Business Acquisition [Line Items]
Identifiable intangible assets				$ 7,100