Acquisitions - Amounts of Assets and Liabilities at Fair Value as of Acquisition Date (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Aug. 22, 2017	Jul. 05, 2017	Nov. 28, 2016	Sep. 30, 2016	Nov. 30, 2015	Sep. 30, 2015	Aug. 14, 2015	Oct. 01, 2014
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill	$ 233,638				$ 202,138		$ 121,408
PBMMI and Novare
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable			$ 2,800
Prepaid expenses and other current assets			267
Property, plant and equipment			2,887
Intangible assets			8,600
Goodwill			21,451
Goodwill deductible for tax purposes			21,451
Accounts payable			(699)
Accrued liabilities			(526)
Deferred revenue			(385)
Other liabilities			(103)
Total purchase price			$ 34,292
Cool Lab, LLC
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Inventory				$ 1,283
Intangible assets				6,100
Goodwill				8,527
Goodwill deductible for tax purposes				8,527
Accrued liabilities				(30)
Other liabilities				(686)
Total purchase price				$ 15,194
RURO, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable		$ 100
Intangible assets		4,000
Goodwill		1,600
Deferred revenue		(200)
Total purchase price		$ 5,500
BioStorage Technologies, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable						$ 16,942
Prepaid expenses and other current assets						321
Property, plant and equipment						14,345
Intangible assets						41,460
Goodwill						79,639
Other 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 liabilities						(61)
Total purchase price						$ 125,248
Contact Co., Ltd
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable								$ 42
Inventory								2,020
Prepaid expenses and other current assets								484
Property, plant and equipment								79
Goodwill								4,195
Other assets								1,410
Accounts payable								(1,089)
Accrued liabilities								(1,823)
Long-term deferred tax liabilities								(774)
Total purchase price								6,834
FluidX
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable									$ 1,980
Inventory									2,857
Prepaid expenses 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									15,505
Completed Technology | Contact Co., Ltd
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets								$ 2,290
Completed Technology | FluidX
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets									1,230
Trademarks and Trade Names | FluidX
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets									750
Customer Relationships | FluidX
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets									$ 4,810