Equity - Narrative (Details) shares in Millions, $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2022 plan shares	Mar. 31, 2022 USD ($) plan	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) plan	Mar. 31, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive compensation plans maintained by the company | plan	3	3		3
Matching contribution | $		$ 0.3	$ 0.3	$ 0.6	$ 0.6
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional number of shares authorized for the plan (in shares) | shares	1.9