General form of registration statement for all companies including face-amount certificate companies

Real Estate Inventories (Details)

v3.20.4
Real Estate Inventories (Details) - Landsea Homes [Member] - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Total real estate owned inventory $ 728,155,000 $ 598,179,000 $ 580,473,000
Real estate inventories not owned   66,680,000
Total real estate inventory   598,179,000 647,153,000
Deposits and pre-acquisition costs [Member]      
Total real estate owned inventory 18,078,000 24,794,000 35,361,000
Land held and land under development [Member]      
Total real estate owned inventory 224,340,000 178,183,000 120,471,000
Homes completed or under construction [Member]      
Total real estate owned inventory 449,522,000 369,364,000 404,092,000
Model homes [Member]      
Total real estate owned inventory $ 36,215,000 $ 25,838,000 $ 20,549,000