Acquisitions - Goodwill (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jul. 01, 2022	Sep. 30, 2021	Apr. 02, 2021	Dec. 03, 2020	Sep. 30, 2020	Feb. 11, 2020
Business Combination, Goodwill [Abstract]
Goodwill	$ 513,623		$ 469,356			$ 453,177
Life Sciences Services
Business Combination, Goodwill [Abstract]
Goodwill	$ 359,011		$ 359,218			$ 349,899
Barkey Holding GmbH and Subsidiaries
Business Combination, Goodwill [Abstract]
Goodwill		$ 57,800
Goodwill deductible for tax purposes		$ 0
Abeyatech LLC
Business Combination, Goodwill [Abstract]
Goodwill				$ 4,400
Goodwill deductible for tax purposes				$ 4,400
Trans-Hit Biomarkers
Business Combination, Goodwill [Abstract]
Goodwill					$ 9,300
Trans-Hit Biomarkers | Life Sciences Services
Business Combination, Goodwill [Abstract]
Goodwill					9,300
Goodwill deductible for tax purposes					$ 0
RURO, Inc.
Business Combination, Goodwill [Abstract]
Goodwill							$ 11,000
RURO, Inc. | Life Sciences Services
Business Combination, Goodwill [Abstract]
Goodwill							11,000
Goodwill deductible for tax purposes							$ 0