Shareholders' Equity and Non-Controlling Interests (Schedule of Conversions by Stock) (Details) - shares shares in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Convertible Units Outstanding [Roll Forward]
Beginning balance	25,035	27,340
Issuance of NCI units	0	198
Vested LLC C-1s canceled	(1,310)	(233)
LLC C-1s vested	1,000	755
NCI units settled in cash	0	(58)
NCI units converted to Pubco	(583)	(2,483)
Ending balance	24,142	25,519