Common Stock (Details) - USD ($) $ in Millions			3 Months Ended		9 Months Ended
	Jul. 20, 2021	Jan. 07, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Member Units | Bold Contribution Agreement
Capital Unit [Line Items]
Stock conversion (in shares)					1
Class A Common Stock
Capital Unit [Line Items]
Common stock, shares issued (in shares)			50,692,057		50,692,057		30,343,421
Common stock, shares outstanding (in shares)			50,692,057		50,692,057		30,343,421
Class A Common Stock | Bold Contribution Agreement
Capital Unit [Line Items]
Stock conversion (in shares)					1
Class A Common Stock | 2014 Plan
Capital Unit [Line Items]
Common shares issued during period under stock plan (in shares)			220,219	195,344	1,162,879	726,082
Common stock repurchased (in shares)			65,106	54,268	389,213	187,773
Class B Common Stock
Capital Unit [Line Items]
Common stock, shares issued (in shares)			34,353,995		34,353,995		35,009,371
Common stock, shares outstanding (in shares)			34,353,995		34,353,995		35,009,371
EEH units and class B common stock converted to class A common stock (in shares)			43,882	49,316	655,376	251,309
Tracker And Sequel Aquisitions | Class A Common Stock
Capital Unit [Line Items]
Common shares issued during period under stock plan (in shares)	6,200,000
Amount of equity issued	$ 61.8
IRM Acquisition | Class A Common Stock
Capital Unit [Line Items]
Common shares issued during period under stock plan (in shares)		12,719,594
Amount of equity issued		$ 76.6