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Acquisitions - Amounts of Assets and Liabilities at Fair Value as of Acquisition Date (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Apr. 29, 2021	Dec. 03, 2020	Sep. 30, 2020	Feb. 11, 2020
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill	$ 551,326			$ 501,536
Precise Automation, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill		$ 32,900
Deferred tax liabilities		6,200
Other Acquisition, Closed Third Quarter, Fiscal Year 2021
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill	4,400
Trans-Hit Biomarkers
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill			$ 9,300
Intangible assets			7,800
Deferred tax liabilities			$ 2,400
RURO, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable					$ 600
Goodwill					11,000
Liabilities					2,700
Completed Technology \| Precise Automation, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets		38,900
Completed Technology \| Other Acquisition, Closed Third Quarter, Fiscal Year 2021
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets	$ 11,900
Completed Technology \| RURO, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets					2,900
Customer Relationships \| Precise Automation, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets		$ 2,400
Customer Relationships \| RURO, Inc.
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets					$ 2,900