Revenue Recognition - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2022 USD ($) Customer	Jun. 30, 2021 USD ($) Customer	Jun. 30, 2022 USD ($) Customer	Jun. 30, 2021 USD ($) Customer	Sep. 30, 2021 USD ($)
Disaggregation Of Revenue [Line Items]
Revenues	$ 89,041,000	$ 96,801,000	$ 269,747,000	$ 289,106,000
Minimum commitment deals of revenue			$ 47,100,000
Distribution period			5 years
Contract acquisition costs			$ 6,900,000		$ 6,900,000
Contract acquisition cost, amortization	700,000	600,000	1,900,000	1,500,000
Contract acquisition cost, impairment			0
Capitalized contract cost, amortization	2,300,000	3,000,000.0	7,800,000	10,500,000
Capitalized contract cost, impairment			0
Customer One
Disaggregation Of Revenue [Line Items]
Revenues	10,100,000	19,300,000	54,300,000	54,500,000
Customer Two
Disaggregation Of Revenue [Line Items]
Revenues		12,700,000	38,300,000	37,400,000
United States
Disaggregation Of Revenue [Line Items]
Revenues	23,317,000	31,632,000	80,401,000	100,507,000
Germany
Disaggregation Of Revenue [Line Items]
Revenues	18,880,000	24,519,000	61,520,000	81,230,000
Japan
Disaggregation Of Revenue [Line Items]
Revenues	$ 17,476,000	$ 19,032,000	$ 68,965,000	$ 45,484,000
Revenues | Customer Concentration Risk
Disaggregation Of Revenue [Line Items]
Number of customers accounted for revenues | Customer	1	2	2	2
Revenues | Customer Concentration Risk | Customer One
Disaggregation Of Revenue [Line Items]
Percentage of revenue	11.40%	20.00%	20.10%	18.80%
Revenues | Customer Concentration Risk | Customer Two
Disaggregation Of Revenue [Line Items]
Percentage of revenue		13.10%	14.20%	12.90%
Minimum
Disaggregation Of Revenue [Line Items]
Connected services contract term			1 year
Contract acquisition cost, deferred and amortized over benefit period			1 year
Contract term	1 year		1 year
Minimum | Revenues | United States | Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Percentage of revenue	10.00%	10.00%	10.00%	10.00%
Minimum | Revenues | Germany | Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Percentage of revenue	10.00%	10.00%	10.00%	10.00%
Minimum | Revenues | Japan | Geographic Concentration Risk
Disaggregation Of Revenue [Line Items]
Percentage of revenue	10.00%	10.00%	10.00%	10.00%
Maximum
Disaggregation Of Revenue [Line Items]
Connected services contract term			5 years
Contract acquisition costs, expected benefit period			1 year
Contract acquisition cost, deferred and amortized over benefit period			8 years
Contract term	8 years		8 years