Non-controlling Interest - Narrative (Details) - USD ($) shares in Thousands	1 Months Ended		9 Months Ended
	May 31, 2020	Feb. 29, 2020	Sep. 30, 2020	Sep. 30, 2019
Noncontrolling Interest [Line Items]
Increase in authorized amount under stock repurchase program	$ 20,000,000.0	$ 20,000,000.0
Repurchase of common units (in shares)	1,100
Payments for the repurchase of common units	$ 20,000,000.0		$ 20,000,000	$ 24,705,000
Remaining authorized repurchase amount			$ 0
Class A Common Stock
Noncontrolling Interest [Line Items]
Issuance of common stock (in shares)			18,300