Revenue - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Contract assets	$ 10.8		$ 7.8
Deferred revenue, total	3.7		$ 6.8
Revenue recognized included in deferred revenue balance at beginning of period	3.4	$ 3.9
Abbott Agreement [Member]
Disaggregation of Revenue [Line Items]
Deferred revenue, total	$ 3.4