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Summary of Significant Accounting Policies Basis of Presentation and Principles of Consolidation (Additional Information) (Details) - USD ($)	1 Months Ended	9 Months Ended
	Aug. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2018
Subsidiary, Sale of Stock [Line Items]
Common stock shares outstanding		32,129,970	23,410,348
Common stock, shares issued		32,129,970	23,410,348	706,701
Common stock, shares issued on liquidation		24,999,970
Deferred offering costs		$ 0
Common Stock Allocated to Series A-1 And Series A-2 Preferred Unit Holders [Member]
Subsidiary, Sale of Stock [Line Items]
Stock issued during period, shares, new issues		5,257,590
Common Stock Allocated To SeriesB Preferred Units Holders [Member]
Subsidiary, Sale of Stock [Line Items]
Stock issued during period, shares, new issues		16,402,235
Common Stock Allocated to Common Unit Holders [Member]
Subsidiary, Sale of Stock [Line Items]
Stock issued during period, shares, new issues		706,701
Common Stock Allocated To Performance Based Incentive Common Unit Holders Member
Subsidiary, Sale of Stock [Line Items]
Stock issued during period, shares, new issues		188,454
Common Stock Allocated To Incentive Units Holders [Member]
Subsidiary, Sale of Stock [Line Items]
Stock issued during period, shares, new issues		2,444,990
Additional Paid-In Capital [Member]
Subsidiary, Sale of Stock [Line Items]
Deferred offering costs		$ 3,200,000
IPO [Member]
Subsidiary, Sale of Stock [Line Items]
Shares issued price per share	$ 13.00
Stock issued during period, shares, new issues	7,130,000
Prior to IPO [Member] | Series A-1 and A-2 Redeemable Convertible Preferred Unit [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock shares outstanding		33,478,255
Prior to IPO [Member] | Series B Redeemable Convertible Preferred Unit [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock shares outstanding		104,442,965
Prior to IPO [Member] | Common Units [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock shares outstanding		4,500,000
Prior to IPO [Member] | Performance Based Incentive Common Units [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock shares outstanding		1,200,000
Prior to IPO [Member] | Incentive units [Member]
Subsidiary, Sale of Stock [Line Items]
Common stock shares outstanding		20,869,704

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