Concentration of Credit Risk - Schedule of Geographical Concentration of Credit Risk (Details) - Geographic Concentration Risk	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
California | Assets, Total | Continuing Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	30.00%	31.00%
California | Assets, Total | Discontinued Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	4.00%	6.00%
California | Sales Revenues | Continuing Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	21.00%	22.00%	22.00%
California | Sales Revenues | Discontinued Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	6.00%	6.00%	4.00%
Florida | Assets, Total | Continuing Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	10.00%	2.00%
Florida | Assets, Total | Discontinued Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	4.00%	6.00%
Florida | Sales Revenues | Continuing Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	14.00%	2.00%	2.00%
Florida | Sales Revenues | Discontinued Operations
Concentration Risk [Line Items]
Concentration risk (as a percent)	6.00%	7.00%	7.00%