Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Apr. 30, 2020	Oct. 01, 2019	Jun. 03, 2019
Schedule Of Accounting Policies [Line Items]
Revenue, description of payment terms			30 to 90 days from the date of shipment or satisfaction of the performance obligation
Contingent consideration liability	$ 19,774		$ 19,774
Right-of-use assets	6,472		6,472
Lease obligations	6,714		6,714
Revenues	84,797	$ 48,440	189,514	$ 150,168
Current government grant obligations	577		577
Non current government grant obligations	10,596		10,596
Reagent Rental Arrangements [Member] | Lease Elements [Member] | Revenues [Member]
Schedule Of Accounting Policies [Line Items]
Revenues	$ 1,150	$ 1,100	$ 3,400	$ 3,200
ASU 2016-02 [Member]
Schedule Of Accounting Policies [Line Items]
Right-of-use assets						$ 5,880
Lease obligations						$ 5,880
Maximum [Member]
Schedule Of Accounting Policies [Line Items]
Contract cost, amortization period	1 year		1 year
Maximum [Member] | Financial Performance Targets [Member]
Schedule Of Accounting Policies [Line Items]
Potential milestone payment	$ 50,000		$ 50,000
GenePOC
Schedule Of Accounting Policies [Line Items]
Contingent consideration liability	19,774		19,774				$ 27,202
GenePOC | Minimum [Member] | Product Development Milestones [Member]
Schedule Of Accounting Policies [Line Items]
Potential milestone payment	20,000		20,000
GenePOC | Minimum [Member] | Product Development Milestones And Financial Performance Targets [Member]
Schedule Of Accounting Policies [Line Items]
Potential milestone payment	64,000		64,000
GenePOC | Maximum [Member] | Product Development Milestones [Member]
Schedule Of Accounting Policies [Line Items]
Potential milestone payment	14,000		14,000
GenePOC | Maximum [Member] | Financial Performance Targets [Member]
Schedule Of Accounting Policies [Line Items]
Potential milestone payment	50,000		50,000
GenePOC | Maximum [Member] | Product Development Milestones And Financial Performance Targets [Member]
Schedule Of Accounting Policies [Line Items]
Potential milestone payment	70,000		70,000
Exalenz [Member]
Schedule Of Accounting Policies [Line Items]
Current government grant obligations	577		577
Non current government grant obligations	10,596		10,596
Government grant obligations	$ 11,173		$ 11,173		$ 11,108