Business Combinations - Narrative (Details)			3 Months Ended		6 Months Ended
	Mar. 23, 2022 USD ($)	May 28, 2021 USD ($) shares	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Business Acquisition [Line Items]
Acquisition-related costs and expenses			$ 3,056,000	$ 1,659,000	$ 5,335,000	$ 3,352,000
Goodwill expected to be deductible for income tax purposes		$ 0
ID R&D
Business Acquisition [Line Items]
Aggregate purchase price		49,000,000
Initial cash payment paid for acquisition		$ 13,000,000
Common stock issued during acquisition (in shares) | shares		867,226
Common stock issued during acquisition, value		$ 13,900,000
Earnout period shift (in years)		1 year
Fair value of contingent consideration		$ 15,700,000
Acquisition-related costs and expenses		600,000
Escrow deposit		$ 4,000,000
Period to maintain escrow deposit (in months)		24 months
ID R&D | First Earnout Period
Business Acquisition [Line Items]
Earnout period (in years)		1 year
Contingent consideration arrangement, range of outcomes, high		$ 12,300,000
Earnout percentage		0.15
ID R&D | Second Earnout Period
Business Acquisition [Line Items]
Contingent consideration arrangement, range of outcomes, high		$ 9,800,000
HooYu
Business Acquisition [Line Items]
Initial cash payment paid for acquisition	$ 129,100,000
Fair value of contingent consideration	900,000
Acquisition-related costs and expenses	$ 1,900,000
Percentage of outstanding share capital acquired	100.00%
Payments to Sellers and third-party legal and investment advisors	$ 127,100,000