REAL ESTATE INVENTORY AND LAND DEPOSITS - Narrative (Details) $ in Millions	Mar. 31, 2020 USD ($) lot	Dec. 31, 2019 USD ($) lot
Real Estate [Line Items]
Right to purchase lots of land option (in lot) | lot	6,780	4,263
Aggregate purchase price	$ 502.3	$ 289.7
Non-refundable option deposits	$ 167.0	$ 39.8
WLH
Real Estate [Line Items]
Right to purchase lots of land option (in lot) | lot	3,542
Aggregate purchase price	$ 345.4