Summary of Significant Accounting Policies - Deferred Revenue Expected To Be Recognized (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Revenue Recognition
Remaining performance obligation amount	$ 16,891	$ 12,753
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue Recognition
Period in which remaining performance obligation is expected to be recognized as revenue		3 months
Remaining performance obligation amount		$ 4,843
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue Recognition
Period in which remaining performance obligation is expected to be recognized as revenue		1 year
Remaining performance obligation amount		$ 2,780
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue Recognition
Period in which remaining performance obligation is expected to be recognized as revenue	3 months
Remaining performance obligation amount	$ 7,285
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue Recognition
Period in which remaining performance obligation is expected to be recognized as revenue	1 year	1 year
Remaining performance obligation amount	$ 4,678	$ 5,130
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue Recognition
Period in which remaining performance obligation is expected to be recognized as revenue	1 year
Remaining performance obligation amount	$ 4,928