Net Income Per Share Attributable to Common Stockholders - Schedule of Antidilutive Securities Excluded from Computation of Earnings per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Class A
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Total excludable from net income per share attributable to common stockholders – diluted	892,639	0	668,294	0
Class A | Options to purchase common stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Total excludable from net income per share attributable to common stockholders – diluted	892,639	0	668,294	0
Class A | Common stock issuable upon conversion of convertible preferred stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Total excludable from net income per share attributable to common stockholders – diluted	0	0	0	0
Class B
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Total excludable from net income per share attributable to common stockholders – diluted	0	33,443,969	0	34,572,611
Class B | Options to purchase common stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Total excludable from net income per share attributable to common stockholders – diluted	0	0	0	1,128,642
Class B | Common stock issuable upon conversion of convertible preferred stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Total excludable from net income per share attributable to common stockholders – diluted	0	33,443,969	0	33,443,969