Segment and Geographic Information - Reconciliation of Reportable Segment Operating Income (Loss) to Corresponding Consolidated Amounts (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 136,939	$ 129,087	$ 129,535	$ 118,142	$ 108,246	$ 93,299	$ 95,304	$ 91,688	$ 513,703	$ 388,537	$ 334,179
Amortization of other intangible assets									37,400	35,400	27,300
Restructuring charges									385	674	1,388
Operating income (loss)	$ (21,241)	$ (883)	$ (9,321)	$ 356	$ (1,382)	$ (12,051)	$ (11,145)	$ (12,022)	(31,089)	(36,600)	(47,431)
Interest income									632	849	1,449
Interest expense									(2,037)	(2,944)	(22,250)
Other expenses, net									(16,475)	(1,597)	(1,386)
Loss before income taxes									(48,969)	(40,292)	(83,957)
Life Sciences Products
Segment Reporting Information [Line Items]
Total revenue									199,606	129,759	119,020
Life Sciences Services
Segment Reporting Information [Line Items]
Total revenue									314,097	258,778	215,159
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)									45,753	(182)	(11,900)
Operating Segments | Life Sciences Products
Segment Reporting Information [Line Items]
Operating income (loss)									23,094	(3,041)	(20,876)
Operating Segments | Life Sciences Services
Segment Reporting Information [Line Items]
Operating income (loss)									22,659	2,859	8,976
Segment Reconciling Items
Segment Reporting Information [Line Items]
Restructuring related charges									13,364	301	285
Segment Reconciling Items | Completed Technology
Segment Reporting Information [Line Items]
Amortization of other intangible assets									8,073	8,099	6,824
Segment Reconciling Items | Acquired Intangible Assets
Segment Reporting Information [Line Items]
Amortization of other intangible assets									29,299	27,276	20,445
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Other unallocated corporate expense (income)									$ 25,721	$ 68	$ 6,589