Acquisitions - Pro Forma Information - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended		12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Business Acquisition, Pro Forma Information [Abstract]
Net income (loss)			$ 59,077	$ (38,154)	$ 50,345
Net income (loss)	$ (2,829)		62,497	3,437	64,116
GENEWIZ
Business Acquisition, Pro Forma Information [Abstract]
Depreciation and amortization expense included in pro forma earnings			3,100		6,500
Interest expense excluded from pro forma earnings			$ 4,800		$ 9,600
Property, plant, and equipment, leases, and intangible asset step-up depreciation and amortization expense		$ 1,600
Interest expense related to financing activities		$ 2,000
Net income (loss)				(38,154)
One-time option, bonus, and transaction costs incurred by acquiree				43,900
Acquisition related costs				$ 6,300		$ 3,800