Significant Accounting Policies - Summary of Disaggregation of Revenue by Reportable Segment and Geographic Region (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 84,797	$ 48,440	$ 189,514	$ 150,168
Revenue, % change	75.00%		26.00%
Diagnostics [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 21,598	33,118	$ 91,331	103,283
Revenue, % change	(35.00%)		(12.00%)
Diagnostics [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 17,575	27,356	$ 72,980	84,042
Revenue, % change	(36.00%)		(13.00%)
Diagnostics [Member] | EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 3,576	5,076	$ 16,853	17,427
Revenue, % change	(30.00%)		(3.00%)
Diagnostics [Member] | ROW [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 447	686	$ 1,498	1,814
Revenue, % change	(35.00%)		(17.00%)
Life Science [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 63,199	15,322	$ 98,183	46,885
Revenue, % change	312.00%		109.00%
Life Science [Member] | Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 22,015	4,369	$ 30,642	14,347
Revenue, % change	404.00%		114.00%
Life Science [Member] | EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 26,070	6,389	$ 40,977	21,608
Revenue, % change	308.00%		90.00%
Life Science [Member] | ROW [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 15,114	$ 4,564	$ 26,564	$ 10,930
Revenue, % change	231.00%		143.00%