Acquisitions - Pro Forma Information - Tabular Disclosure - Pro Forma (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2019	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition, Pro Forma Information [Abstract]
Revenue							$ 797,501	$ 752,061
Net income (loss)							$ 10,350	$ 2,273
GENEWIZ
Business Acquisition, Pro Forma Information [Abstract]
Revenue	$ 196,021	$ 170,033	$ 394,411	$ 356,947	$ 598,291	$ 561,397
Net income (loss)	$ 6,795	$ (55,263)	$ 4,086	$ 3,916	$ 5,062	$ 6,944