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Stock-based Compensation - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended	9 Months Ended			24 Months Ended
	Aug. 03, 2021	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of stock options exercised						$ 55,100
Fair value of options vested						4,500
Stock-based compensation expense		$ 33,520		$ 1,297		49,887	$ 4,710
OptoGration
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense						$ 2,100
Contingent stock consideration	$ 22,000
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance (in shares)		36,588,278				36,588,278
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)						11,465,582
Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years and in months)						6 years
Stock options \| 2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years and in months)						4 years
Award expiration period (in years)						10 years
Stock options \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years and in months)						1 year
Stock options \| Tranche One \| 2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage						25.00%
Stock options \| Tranche Two \| 2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years and in months)						36 months
Award vesting percentage						75.00%
Restricted Stock \| Share-based Payment Arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)									0
Award vesting period (in years and in months)								4 years
Restricted Stock \| Tranche One \| Share-based Payment Arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years and in months)								1 year
Award vesting percentage								25.00%
Restricted Stock \| Tranche Two \| Share-based Payment Arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years and in months)								36 months
Award vesting percentage								75.00%
Fixed Value Equity Awards \| Share-based Payment Arrangement, Employee \| 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years and in months)						4 years
Stock-based compensation expense		$ 1,200				$ 1,800
Fixed Value Equity Awards \| Tranche One \| Share-based Payment Arrangement, Employee \| 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage						25.00%
Fixed Value Equity Awards \| Tranche Two \| Share-based Payment Arrangement, Employee \| 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage						25.00%
Fixed Value Equity Awards \| Tranche Three \| Share-based Payment Arrangement, Employee \| 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage						25.00%
Fixed Value Equity Awards \| Tranche Four \| Share-based Payment Arrangement, Employee \| 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage						25.00%
Fixed Value Equity Awards and Acquisition-Related Compensation Liability
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 3,300	$ 600		$ 600	$ 3,900